FORM 1O-Q


                   SECURITIES AND EXCHANGE COMMISSION
                         Washington, D.C. 20549


      (Mark one)

      [X]  QUARTERLY REPORT PURSUANT TO SECTION 13 or 15 (d)
                  OF THE SECURITIES EXCHANGE ACT OF 1934

            For the quarterly period ended March 31, 2005

                              OR

      [ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d)
                  OF THE SECURITIES EXCHANGE ACT OF 1934

            For the transition period from            to



Commission File Number 1-898.


                      AMPCO-PITTSBURGH CORPORATION


Incorporated in Pennsylvania.
I.R.S. Employer Identification No. 25-1117717.
600 Grant Street, Pittsburgh, Pennsylvania 15219
Telephone Number 412/456-4400


Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15 (d) of the Securities Exchange
Act of 1934 during the preceding 12 months (or for such shorter periods
that the registrant was required to file such reports) and (2) has been
subject to such filing requirements for the past 90 days.

                             YES  X       NO



On May 16, 2005, 9,757,497 common shares were outstanding.






                                  - 1 -



                      AMPCO-PITTSBURGH CORPORATION

                                  INDEX


                                                          Page No.


Part I - Financial Information:

         Item 1 - Condensed Consolidated Financial Statements

           Condensed Consolidated Balance Sheets -
             March 31, 2005 and December 31, 2004 (restated) 3

           Condensed Consolidated Statements of Operations -
             Three Months Ended March 31, 2005 and 2004
             (restated)                                      4

           Condensed Consolidated Statements of Cash Flows -
             Three Months Ended March 31, 2005 and 2004
             (restated)                                      5

           Notes to Condensed Consolidated Financial
             Statements                                      6

         Item 2 - Management's Discussion and Analysis
             of Financial Condition and Results of
             Operations                                     14

         Item 3 - Quantitative and Qualitative
             Disclosures about Market Risk                  19

         Item 4 - Controls and Procedures                   19

Part II - Other Information:

            Item 1 - Legal Proceedings                      20

            Item 6 - Exhibits                               20

         Signatures                                         22

         Exhibit Index                                      23

         Exhibits

             Exhibit 31.1
             Exhibit 31.2
             Exhibit 32.1
             Exhibit 32.2





                                  - 2 -



                     PART I - FINANCIAL INFORMATION
                      AMPCO-PITTSBURGH CORPORATION
                  CONDENSED CONSOLIDATED BALANCE SHEETS
                               (UNAUDITED)

                                     March 31,       December 31,
                                         2005            2004 *


                                                    

Assets
Current assets:
Cash and cash equivalents           $  5,740,302     $  11,339,514
Short-term marketable securities      26,255,000        25,455,000
Receivables, less allowance for
 doubtful accounts of $674,063 in
 2005 and $955,677 in 2004            40,861,637        37,495,920
Inventories                           54,734,849        54,318,553
Other                                  9,050,081         8,337,414
     Total current assets             136,641,869      136,946,401
Property, plant and equipment, net     68,223,391       69,432,041
Prepaid pensions                       25,430,810       25,139,810
Goodwill                                2,694,240        2,694,240
Other noncurrent assets                 3,753,807        3,731,151
                                     $236,744,117     $237,943,643

Liabilities and Shareholders' Equity
Current liabilities:
Line of credit                       $  2,211,452     $          -
Accounts payable                       13,371,348       15,446,125
Accrued payrolls and employee benefits  7,706,850        8,715,427
Industrial Revenue Bond debt           13,311,000       13,311,000
Other                                  17,077,252       17,009,056
     Total current liabilities         53,677,902       54,481,608
Employee benefit obligations           28,417,581       28,871,999
Deferred income taxes                  19,006,801       18,843,171
Other noncurrent liabilities            5,798,592        7,229,456
     Total liabilities                106,900,876      109,426,234

Commitments and contingent liabilities
(Note 6)

Shareholders' equity:
Preference stock - no par value;
 authorized 3,000,000 shares: none
 issued                                        -                -
Common stock - par value $1; authorized
 20,000,000 shares; issued and
 outstanding 9,757,497 in 2005 and
 9,747,497 in 2004                     9,757,497        9,747,497
Additional paid-in capital           104,318,527      104,204,311
Retained earnings                     34,689,019       34,162,688
Accumulated other comprehensive loss (18,921,802)     (19,597,087)
     Total shareholders' equity      129,843,241      128,517,409
   Total liabilities and shareholders'
     equity                         $236,744,117     $237,943,643

* - Restated - Note 12.




        See Notes to Condensed Consolidated Financial Statements.

                                -    3 -




                      AMPCO-PITTSBURGH CORPORATION
             CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                               (UNAUDITED)




                                        Three Months Ended March 31,
                                             2005        2004 *



                                                      

Net sales                               $ 58,894,052  $ 46,786,579

Operating costs and expenses:
 Costs of products sold
  (excluding depreciation)                47,985,845    36,751,562
 Selling and administrative                6,947,178     6,807,279
 Depreciation                              1,692,846     1,596,516
 (Gain) loss on disposition of assets         (4,165)        8,968
   Total operating expenses               56,621,704    45,164,325

Income from operations                     2,272,348     1,622,254

Other (expense) income:
 Interest expense                           (104,612)      (61,066)
 Other - net                                 (42,655)      243,385
                                            (147,267)      182,319

Income before income taxes                 2,125,081     1,804,573

Income tax provision                         622,000       496,000

Net income                             $   1,503,081  $  1,308,573

Basic and diluted earnings
 per common share:

 Net income per common share-basic     $        0.15  $       0.14
 Net income per common share-dilutive  $        0.15  $       0.13

Cash dividends declared per share      $         .10  $        .10

Weighted average number of common
 shares outstanding:

 Basic shares                              9,756,275     9,682,398
 Dilutive shares                           9,815,304     9,748,644


* Restated - See Note 12.





        See Notes to Condensed Consolidated Financial Statements.

                                  - 4 -



                      AMPCO-PITTSBURGH CORPORATION
             CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                               (UNAUDITED)


                                          Three Months Ended March 31,
                                             2005             2004*


                                                         


Net cash flows (used in) provided by
 operating activities                     $(5,576,557)    $  2,170,311

Cash flows from investing activities:
 Purchases of property, plant and equipment  (633,942)      (1,298,682)
 Purchases of short-term marketable
  securities                               (7,000,000)     (13,400,000)
 Proceeds from sale of short-term
  marketable securities                     6,200,000        6,600,000
 Proceeds from sale of business                     -          500,000
 Proceeds from U.K. governmental grant              -          922,500
 Proceeds from sale of assets                       -           18,075

  Net cash flows used in investing
   activities                              (1,433,942)      (6,658,107)

Cash flows from financing activities:
 Proceeds from line of credit               2,234,361                -
 Proceeds from the issuance of common stock   108,250          550,000
 Dividends paid                              (975,750)        (965,750)

  Net cash flows provided by (used in)
   financing activities                     1,366,861         (415,750)

Effect of exchange rate changes on cash
 and cash equivalents                          44,426         (526,241)

Net decrease in cash and cash equivalents  (5,599,212)      (5,429,787)
Cash and cash equivalents at
 beginning of period                       11,339,514       15,488,789

Cash and cash equivalents at
 end of period                           $  5,740,302     $ 10,059,002


Supplemental information:
 Income tax payments                     $     82,555     $     52,440
 Interest payments                       $    102,529     $     64,462





* Restated - See Note 12.




        See Notes to Condensed Consolidated Financial Statements.


                                  - 5 -



                   AMPCO-PITTSBURGH CORPORATION
       NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                            (UNAUDITED)

1. Unaudited Condensed Consolidated Financial Statements

   The condensed consolidated balance sheet as of March 31, 2005,
   the condensed consolidated statements of operations for the
   three months ended March 31, 2005 and 2004 and the condensed
   consolidated statements of cash flows for the three months ended
   March 31, 2005 and 2004 have been prepared by Ampco-Pittsburgh
   Corporation (the Corporation) without audit. In the opinion of
   management, all adjustments, consisting of only normal recurring
   adjustments necessary to present fairly the financial position,
   results of operations and cash flows for the periods presented
   have been made.  The results of operations for the three months
   ended March 31, 2005 are not necessarily indicative of the
   operating results expected for the full year.

   Certain information and footnote disclosures normally included
   in annual financial statements prepared in accordance with
   accounting principles generally accepted in the United States of
   America have been condensed or omitted.

2. Inventories

   At March 31, 2005 and December 31, 2004, approximately 65% and
   64%, respectively, of the inventories were valued on the LIFO
   method, with the remaining inventories being valued on the FIFO
   method.  Inventories were comprised of the following:

                                              (in thousands)
                                         March 31,   December 31,
                                             2005         2004

   Raw materials                          $14,808      $13,984
   Work-in-process                         25,007       25,717
   Finished goods                           8,870        8,320
   Supplies                                 6,050        6,298
                                          $54,735      $54,319

3. Property, Plant and Equipment

   At March 31, 2005 and December 31, 2004, property, plant and
   equipment were comprised of the following:

                                               (in thousands)
                                          March 31,   December 31,
                                            2005         2004

   Land and land improvements            $  4,292     $  4,292
   Buildings                               25,158       25,170
   Machinery and equipment                135,429      135,058
                                          164,879      164,520
   Accumulated depreciation               (96,656)     (95,088)
                                         $ 68,223     $ 69,432


                               - 6 -


4.Other Current Liabilities

  Other current liabilities were comprised of the following:

                                                (in thousands)
                                         March 31,   December 31,
                                           2005         2004

  Customer-related liabilities           $ 5,228       $ 5,991
  Other                                   11,849        11,018
                                         $17,077       $17,009

  Included in customer-related liabilities are costs expected to be
  incurred with respect to product warranties.  Changes in the
  liability for product warranty claims for the three months ended
  March 31, 2005 and 2004 consisted of:
                                                   (in thousands)
                                                   Three Months
                                                  Ended March 31,
                                                   2005     2004

  Balance at the beginning of the year           $4,150   $3,435
  Satisfaction of warranty claims                  (722)    (552)
  Provision for warranty claims                     525      598
  Other, primarily impact from changes in
   foreign currency exchange rates                  (49)      72
  Balance at end of period                       $3,904   $3,553

5.Pension and Other Postretirement Benefits

  No contributions were made to the U.S. pension benefit plans
  during the three months ended March 31, 2005 and 2004.
  Contributions to the foreign pension plan approximated $148,000
  and $130,000 and net payments for other postretirement benefits
  approximated $320,000 and $79,000 for the three months ended
  March 31, 2005 and 2004, respectively.  Contributions to the U.K.
  defined contribution plan approximated $61,000 and $3,000 for the
  three months ended March 31, 2005 and 2004, respectively.

  Net periodic pension and other postretirement costs include the
  following components for the three months ended March 31, 2005
  and 2004:
                                     (in thousands)
                             U.S.        Foreign         Other
                          Pension        Pension
   Postretirement
                         Benefits       Benefits        Benefits
                         2005   2004     2005  2004    2005  2004

   
                                            

   Service cost          $   566 $   518  $   - $ 277   $  76 $  60
   Interest cost           1,684   1,658    560   464     192   196
   Expected return on
     plan assets          (2,657) (2,553)  (492) (437)      -     -
   Amortization of prior
     service cost (benefit)  148     147       -     -    (137) (137)
   Actuarial (gain) loss     (34)    (30)     95   194      42    39
   Net benefit (income)
    cost                  $ (293) $ (260)  $ 163 $ 498   $ 173 $ 158





                               - 7 -

6. Commitments and Contingent Liabilities

   Outstanding standby letters of credit as of March 31, 2005
   approximated $19,036,000, the majority of which serve as
   collateral for the Industrial Revenue Bond debt.

   In connection with the sale of certain subsidiaries in 2003, the
   Corporation provided typical warranties to the buyer (such as
   those relating to income taxes, intellectual property, legal
   proceedings, product liabilities and title to property, plant
   and equipment) which primarily expire with the statutes of
   limitations. Losses suffered by the buyer as a result of the
   Corporation's breach of warranties are reimbursable by the
   Corporation up to approximately $2,000,000. Based on experience
   while owning the subsidiary, the Corporation believes no amounts
   will become due.

   During 2004, the Davy Roll operations received $1,498,000
   (800,000 GBP) of U.K. governmental grants toward the purchase
   and installation of certain machinery and equipment.  Under the
   agreement, the grants are repayable if certain conditions are
   not met including achieving and maintaining a targeted level of
   employment through March 2009.

7. Comprehensive Income

   The Corporation's comprehensive income for the three months
   ended March 31, 2005 and 2004 consisted of:
                                                    (in thousands)
                                                    Three Months
                                                   Ended March 31,
                                                    2005     2004

   Net income                                    $ 1,503  $ 1,309
   Foreign currency translation adjustments         (613)     928
   Adjustment to minimum pension liability           436     (385)
   Unrealized holding (losses) gains on
   marketable securities                              (1)       2
   Change in fair value of derivatives               853      928
   Comprehensive income                          $ 2,178  $ 2,782

8. Foreign Exchange and Futures Contracts

   Certain of the Corporation's operations are subject to risk from
   exchange rate fluctuations in connection with sales in foreign
   currencies.  To minimize this risk, forward foreign exchange
   contracts are purchased which are designated as fair value or
   cash flow hedges. As of March 31, 2005, approximately
   $61,447,000 of anticipated foreign denominated sales has been
   hedged with the underlying contracts settling at various dates
   beginning in 2005 through March 2010.  As of March 31, 2005, the
   fair value of contracts expected to settle within the next 12
   months, which is recorded in other current liabilities,
   approximated $1,695,000 and the fair value of the remaining
   contracts, which is recorded in other noncurrent liabilities,
   approximated $3,478,000.  The change in the fair value of the
   contracts designated as cash flow hedges is recorded as a
   component of accumulated other comprehensive income (loss) and
   approximated $(2,842,000), net of income taxes, as of March 31,
   2005.  The change in fair value will be reclassified into
   earnings when the projected sales occur with


                               - 8 -



   approximately $(1,254,000) expected to be released to earnings
   within the next 12 months.  During the three months ended March
   31, 2005 and 2004, approximately $(333,000) and $(464,000),
   respectively, were released to pre-tax earnings.

   (Losses) gains on foreign exchange transactions approximated
   $(126,000) and $222,000 for the three months ended March 31,
   2005 and 2004, respectively.

   In addition, one of the Corporation's subsidiaries is subject to
   risk from increases in the price of a commodity (copper) used in
   the production of inventory.  To minimize this risk, futures
   contracts are entered into which are designated as cash flow
   hedges.  At March 31, 2005, approximately 100% or $2,513,000 of
   anticipated commodity purchases over the next 12 months are
   hedged.  The fair value of the contracts expected to be settled
   within the next 12 months approximated $490,000 and the fair
   value of the remaining contracts approximated $2,000 as of March
   31, 2005.  The change in the fair value of the contracts
   designated as cash flow hedges is recorded as a component of
   accumulated other comprehensive income (loss) and approximated
   $309,000, net of income taxes, as of March 31, 2005.  The change
   in the fair value will be reclassified into earnings when the
   projected sales occur with approximately $308,000 expected to be
   released to earnings within the next 12 months.  During the
   three months ended March 31, 2005 and 2004, approximately
   $209,000 and $140,000, respectively, were released to pre-tax
   earnings.

9. Business Segments

   Presented below are the net sales and income before income taxes
   for the Corporation's two business segments.

                                           (in thousands)
                                          Three Months Ended
                                              March 31,
                                             2005    2004
   Net sales:
    Forged and Cast Rolls               $ 41,392 $ 29,771
    Air and Liquid Processing             17,502   17,016
     Total Reportable Segments          $ 58,894 $ 46,787

   Income before income taxes:
     Forged and Cast Rolls              $  2,577 $  1,720
     Air and Liquid Processing               952    1,117
      Total Reportable Segments            3,529    2,837
      Other expense, including
       corporate costs - net              (1,404)  (1,032)

        Total                           $  2,125 $  1,805


  Income before income taxes for the Air and Liquid Processing
  segment for the three months ended March 31, 2005 and 2004
  includes approximately $190,000 and $475,000, respectively, for
  legal and case management costs associated with personal injury
  claims and insurance recovery litigation related to asbestos-
  containing product and indemnity payments not expected to be
  recovered from insurance carriers (see Note 10).


                               - 9 -


10. Litigation and Environmental Matters (claims not in thousands)

  The Corporation and its subsidiaries are involved in various
  claims and lawsuits incidental to their businesses.  In addition,
  claims have been asserted alleging personal injury from exposure
  to asbestos-containing components historically used in some
  products of certain of the Corporation's subsidiaries.  Those
  subsidiaries, and in some cases, the Corporation, are defendants
  (among a number of defendants, typically over 50 and often over
  100) in cases filed in various state and federal courts.  The
  following table reflects information about these cases for the
  three months ended March 31, 2005:

     Approximate open claims at end of period: 25,000
     Approximate gross settlement and defense costs: $2,613,000
     Approximate claims settled or dismissed during the period: 78

  Of the approximate 25,000 claims pending as of March 31, 2005,
  over 15,000 were made in six lawsuits filed in Mississippi in
  2002.  Substantially all settlement and defense costs in the
  above table were paid by insurers.

  On February 7, 2003, Utica Mutual Insurance Company ("Utica")
  filed a lawsuit in the Supreme Court of the State of New York,
  County of Oneida ("Oneida County Litigation") against the
  Corporation and certain of the subsidiaries named in the
  underlying asbestos actions (the "Policyholder Defendants") and
  three other insurance carriers that provided primary coverage to
  the Corporation (the "Insurer Defendants").  In the lawsuit,
  Utica disputed certain coverage obligations to the Policyholder
  Defendants and asserted that the Insurer Defendants also had
  defense and indemnity obligations to the Policyholder Defendants.

  As of November 24, 2003, the Policyholder Defendants and Utica
  had settled the Oneida County Litigation as among themselves,
  although the Oneida County Litigation remained pending because
  settlement had not been reached with all of the Insurer
  Defendants.  Pursuant to the settlement, Utica accepted financial
  responsibility, subject to the limits of its policies and based
  on fixed defense percentages and specified indemnity allocation
  formulas, for a substantial majority of the asbestos personal
  injury claims arising out of exposure to alleged asbestos-
  containing components in products distributed by the Policyholder
  Defendants that are subsidiaries of the Corporation.  Utica's
  agreed share of such defense and indemnification costs varies
  depending upon the alleged asbestos-containing product at issue,
  whether Utica's primary or umbrella policies are responsible for
  the claims and, for indemnification costs only, the years of the
  claimant's exposure to asbestos.

  On January 23, 2004, Utica sought the court's approval to file an
  amended complaint seeking additional relief against the
  Policyholder Defendants that is substantially identical to the
  relief Utica seeks against those defendants in a separate lawsuit
  filed by Howden Buffalo, Inc. ("Howden") in the United States
  District Court for the Western District of Pennsylvania (the
  "Pennsylvania Litigation") that is described below.  Utica also
  sought to add Howden as a defendant in the Oneida County
  Litigation.



                              - 10 -



  On November 25, 2003, Howden filed the Pennsylvania Litigation
  against the Corporation, Utica and two of the Insurer Defendants
  (with Utica, the "Howden Insurer Defendants").  Howden alleges
  that (1) Buffalo Forge Company, a former subsidiary of the
  Corporation, or its predecessors (collectively or individually,
  "Buffalo Forge") had rights in certain policies issued by the
  Howden Insurer Defendants; (2) those rights were transferred in
  the 1993 transaction whereby the Corporation sold all of the
  capital stock of Buffalo Forge to Howden Group America, Inc. and
  Howden Group Canada, Ltd.; and (3) those rights currently reside
  in Howden, as successor to Buffalo Forge.  In the lawsuit, Howden
  is seeking a judicial determination of the rights and duties of
  the Corporation and the Howden Insurer Defendants under those
  policies with respect to asbestos-related personal injury claims
  asserted against Howden arising from the historical operations of
  Buffalo Forge, as well as monetary damages from Utica as a result
  of its denial of Howden's rights under policies it issued that
  allegedly covered Buffalo Forge.  The Corporation intends to
  defend the lawsuit vigorously.  If Howden is successful in this
  lawsuit and obtains coverage from the Howden Insurer Defendants,
  however, any insurance recovery obtained by Howden under those
  policies could erode, in whole or in part, the applicable
  coverage limits, which would reduce or eliminate coverage amounts
  that otherwise may be available to the Corporation under those
  policies.

  As one of the Howden Insurer Defendants, Utica has filed a cross-
  claim against the Corporation, and a third-party complaint
  against two of its subsidiaries, seeking a declaratory judgment
  that, to the extent Utica has defense or indemnity obligations to
  Howden: (1) Utica is entitled to contribution, subrogation and
  reimbursement from the Corporation or its subsidiaries with
  respect to defense and indemnity payments paid on behalf of the
  Corporation or its subsidiaries; and (2)the Corporation and its
  subsidiaries have no rights under the insurance contracts issued
  by Utica to Buffalo Forge.  The Corporation believes that Utica's
  cross-claim and third party claims, as well as the similar relief
  Utica now seeks in the Oneida County Litigation, are barred by a
  release provided in the settlement of the Oneida County
  Litigation and is otherwise without merit, and intends to assert
  that position in this lawsuit.  If Utica is successful in
  obtaining the declaratory relief it seeks, it could eliminate
  insurance coverage provided to the Corporation by Utica.

  The Corporation believes it has meritorious defenses to the
  Howden lawsuit and Utica's cross claims.  In addition, based on
  the Corporation's claims experience to date with the underlying
  asbestos claims, the available insurance coverage and the
  identity of the subsidiaries that are named in the cases, the
  Corporation believes that the pending legal proceedings will not
  have a material adverse effect on its consolidated financial
  condition or liquidity.  The outcome of particular lawsuits,
  however, could be material to the consolidated results of
  operations of the period in which the costs, if any, are
  recognized.

  There can be no assurance that the Corporation or certain of its
  subsidiaries will not be subjected to significant additional
  claims in the future or that the Corporation's or its
  subsidiaries' ultimate liability with respect to these claims
  will not present significantly greater and longer lasting
  financial exposure than presently contemplated.   The Corporation
  has made an accrual in its financial

                              - 11 -


  statements to reflect its estimated share of costs for pending
  asbestos claims, based on deductible and similar features of its
  relevant insurance policies.  In addition, the Corporation
  incurred uninsured legal costs in connection with advice on
  certain matters pertaining to these asbestos cases including
  insurance litigation, case management and other issues.  Those
  costs amounted to approximately $193,000 and $505,000 for the
  three months ended March 31, 2005 and 2004, respectively.

  With respect to environmental matters, the Corporation is
  currently performing certain remedial actions in connection with
  the sale of real estate previously owned and has been named a
  Potentially Responsible Party at four third-party landfill sites.
  In addition, as a result of the sale of certain subsidiaries, the
  Corporation retained the liability to remediate certain
  environmental contamination at two of the sold locations and has
  agreed to indemnify the buyer against third-party claims arising
  from the discharge of certain contamination from one of these
  locations, the cost for which was accrued at the time of sale.
  Environmental exposures are difficult to assess and estimate for
  numerous reasons including lack of reliable data, the
  multiplicity of possible solutions, the years of remedial and
  monitoring activity required, and identification of new sites.
  However, in the opinion of management, the potential liability
  for all environmental proceedings based on information known to
  date has been adequately reserved.

11. Flood Damage

  In September 2004, the Carnegie, Pennsylvania plant of the
  Corporation's Union Electric Steel subsidiary was damaged by
  flooding as a result of the remnants of Hurricane Ivan.  Through
  March 31, 2005, the Corporation received $4,000,000 toward its
  claim of which $3,000,000 was received in 2004.  Of the
  $1,000,000 received in 2005, $600,000 represents non-refundable
  advances toward the business interruption insurance claim which
  was recorded as a reduction of costs of products sold (excluding
  depreciation) in the accompanying condensed consolidated
  statement of operations.  The remaining $3,400,000 represents
  reimbursement of clean-up costs, repairs to machinery and
  recovery of certain fixed expenses.  Final settlement is expected
  in the second quarter of 2005.

12. Restatement

  Subsequent to the issuance of the Corporation's condensed
  consolidated financial statements for the three months ended
  March 31, 2004, the Corporation determined that deferred tax
  liabilities were not required to be provided for interest
  receivable from its U.K. subsidiary on intercompany debt owed to
  the Corporation.  Additionally, subsequent to the issuance of the
  Corporation's consolidated financial statements for the year
  ended December 31, 2004, the Corporation concluded

  (1)  based on supplemental guidance recently issued, that auction-
       rate securities do not meet the definition of cash equivalents and
       should therefore be classified as short-term marketable securities,
       and



                              - 12 -


  (2)  its outstanding Industrial Revenue Bond debt should be
       classified as a current liability since the bonds can be put back
       to the Corporation on short notice if, although considered remote
       by the Corporation, the bonds are unable to be remarketed and
       bondholders seek reimbursement from the letters of credit which
       serve as collateral for the bonds.  Any draws against the letters
       of credit are required to be repaid by the Corporation immediately.

  Accordingly, the accompanying condensed consolidated financial
  statements for the three months ended March 31, 2004 and the
  condensed consolidated balance sheet as of December 31, 2004 have
  been restated from the amounts previously reported.

  The effect of reversing the deferred tax liabilities on the
  condensed consolidated financial statements for the three months
  ended March 31, 2004 was as follows:

                                         Previously       As
                                         Reported   Restated
  Condensed Consolidated Statement of
  Operations:
  Income tax provision                 $  596,000 $   496,000
  Net income                            1,208,573   1,308,573
  Net income per common share - basic        0.12        0.14
  Net income per common share - dilutive     0.12        0.13

  The effect of reclassifying its investments in auction-rate
  securities from cash and cash equivalents to short-term
  marketable securities and its Industrial Revenue Bond debt from a
  long-term liability to a current liability on the accompanying
  condensed consolidated balance sheet as of December 31, 2004 and
  the condensed consolidated statement of cash flows for the three
  months ended March 31, 2004 was as follows:

                                        Previously         As
                                        Reported       Restated

  Condensed Consolidated Balance Sheet:
  Cash and cash equivalents            $36,794,514   $11,339,514
  Short-term marketable securities               -    25,455,000
  Total current liabilities             41,170,608    54,481,608
  Long-term debt obligations            13,311,000             -

  Condensed Consolidated Statements of
  Cash Flows:
  Purchases of short-term marketable
   securities                                    -   (13,400,000)
  Proceeds from the sale of short-term
   marketable securities                         -     6,600,000
  Net cash flows provided by (used in)
   investing activities                    141,893    (6,658,107)
  Net increase (decrease) in cash and
   cash equivalents                      1,370,213    (5,429,787)
  Cash and cash equivalents at beginning
   of period                            35,738,789    15,488,789
  Cash and cash equivalents at end
   of period                            37,109,002    10,059,002

                              - 13 -


         ITEM 2 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF
           FINANCIAL CONDITION AND RESULTS OF OPERATIONS


Executive Overview

The Corporation currently operates in two business segments - the
Forged and Cast Rolls segment and the Air and Liquid Processing
segment. The Forged and Cast Rolls segment is benefiting from
resurgence in the global steel industry and the weaker dollar which
is improving export business, particularly to the Asian and Indian
markets.  While the unprecedented cost increases experienced in
2004 for raw materials and natural gas have begun to stabilize,
they remain at historically high cost levels.  Operating results
for 2005 are expected to improve in the latter part of the year as
the segment progressively works through its backlog and increased
pricing and raw material and energy surcharges flow through to
earnings.  New machinery brought on-line late in 2004 at Davy Roll
have begun to contribute to operational improvements and have added
needed capacity.

The Air and Liquid Processing segment generally lags any downturn
in the economy; accordingly, the segment was not affected by the
weak economy until 2003.  Similarly, any recovery will not
immediately improve operating results.  In particular, demand for
lube oil pumps is expected to remain steady but significantly below
peak levels in 2002 and 2001 due to reduced demand for gas
turbines.  The segment is also being impacted by higher material
costs, the slow down in the construction industry particularly
related to the pharmaceutical, institutional and health care
markets, and the resulting decline in margins following aggressive
pricing by competitors as a reduced level of potential business is
pursued. Product offerings have been expanded but no significant
improvement is expected until capital spending by the manufacturing
sector improves.

Subsequent to the issuance of the Corporation's consolidated
financial statements for the year ended December 31, 2004, the
Corporation concluded

(1) based on supplemental accounting interpretation recently
issued, that auction-rate securities did not meet the definition of
cash equivalents and should therefore be classified as short-term
marketable securities, and

(2) its outstanding Industrial Revenue Bond debt should be
classified as a current liability, despite principal not beginning
to become due until 2020, since the bonds can be put back to the
Corporation on short notice if, although considered remote by the
Corporation, the bonds are unable to be remarketed and bondholders
seek reimbursement from the letters of credit which serve as
collateral for the bonds.  Any payments under the letters of credit
are required to be repaid by the Corporation immediately.

As soon as practicable, the Corporation intends to file an
amendment on Form 10-K/A to its Annual Report to Shareholders on
Form 10-K for the year ended December 31, 2004, filed with the
Securities and Exchange Commission on March 11, 2005, to change the
balance sheet classification of auction-rate securities from cash
and cash equivalents to short-term marketable securities and its
Industrial Revenue Bond debt from a long-

                              - 14 -



term liability to a current liability, and to reflect purchases and
sales of auction-rate securities as cash flows from investing activities
in the consolidated statements of cash flows, within Part II -
Items 7 and 8 and Part IV - Item 15, as follows:

                                   2004                 2003

                                 As                As
                             Previously   As   Previously   As
                              Reported Restated Reported Restated
                                               (in thousands)
Consolidated Balance Sheets
as of December 31,:


                                                  

Cash and cash equivalents     $ 36,795 $ 11,340 $ 35,739 $ 15,489
Short-term marketable securities     -   25,455        -   20,250
Total current liabilities       41,170   54,481   34,042   47,353
Long-term debt obligations      13,311        -   13,311        -




                                  2004                    2003

                                  As                As
                              Previously    As  Previously   As
                             Reported Restated Reported Restated
                                          (in thousands)
Consolidated Statements of
Cash Flows for the Year Ended:
Purchases of short-term
 marketable securities        $     -  $(48,635)   $     -  $(51,250)
Proceeds from the sale of
 short-term marketable securities   -    43,430          -    31,000
Net cash flow (used in) provided
 by investing activities       (5,111)  (10,316)     6,863   (13,387)
Net increase (decrease) in cash
 and cash equivalents           1,056    (4,149)     7,950   (12,300)
Cash and cash equivalents
 at beginning of period        35,739    15,489     27,789    27,789
Cash and cash equivalents
 at end of period              36,795    11,340     35,739    15,489





The Corporation did not invest in auction-rate securities prior to
2003.

The following MD&A gives effect to the restatement discussed in
Note 12 to the condensed consolidated financial statements for the
three months ended March 31, 2004.

Operations for the Three Months Ended March 31, 2005 and 2004

Net Sales.  Net sales for the three months ended March 31, 2005 and
2004 were $58,894,000 and $46,787,000, respectively.  A discussion
of sales for the Corporation's two segments is included below.
Order backlogs approximated $202,547,000 at March 31, 2005 in
comparison to $164,981,000 at December 31, 2004.  The increase is
attributable principally to the Forged and Cast Rolls segment.
Approximately $46,255,000 of the March 31, 2005 backlog is
scheduled for shipment beyond 2005.

Costs of Products Sold.  Costs of products sold, excluding
depreciation, were 81.5% and 78.6% of net sales for the three
months ended March 31, 2005 and 2004, respectively.  The increase
is due to product mix and higher raw material and natural gas
costs.

                              - 15 -


Selling and Administrative.  Selling and administrative expenses
for the three months ended March 31, 2005 and 2004 were comparable.
Higher commission expense resulting from improved sales volumes
were offset by lower legal and case management costs associated
with personal injury claims and insurance recovery litigation
related to asbestos-containing product and indemnity payments not
expected to be recovered from insurance carriers.

Income from Operations.  Income from operations for the three
months ended March 31, 2005 approximated $2,272,000, including non-
refundable advances of $600,000 toward the business interruption
insurance claim, in comparison to $1,622,000 for the three months
ended March 31, 2004.  A discussion of operating results for the
Corporation's two segments is included below.

Forged and Cast Rolls.  Sales for the three months ended March 31,
2005 improved over the comparable prior year period as a result of
a stronger opening backlog and price increases, including raw
material and energy surcharges. Although operating income benefited
from the additional volume, margins remained relatively flat due to
the higher cost of raw materials and energy from a year ago. During
the quarter, non-refundable advances of $600,000 were received
toward the business interruption insurance claim of Union Electric
Steel, which arose from flooding caused by the remnants of
Hurricane Ivan in the third quarter of 2004, with final settlement
expected in second quarter of 2005.  Backlog approximated
$173,630,000 as of March 31, 2005 in comparison to $138,729,000 as
of December 31, 2004. The increase is reflective of the continued
demand for products of both the U.S. and U.K. operations.
Approximately $43,041,000 of the March 31, 2005 backlog is
scheduled for shipment beyond 2005.

Air and Liquid Processing.  Sales for the three months ended March
31, 2005 and 2004 were comparable.  Operating income declined due
principally to the weak performance of the air handling business
which is being impacted by a decline in construction activity and
depressed pricing on available projects.  Results for the pumps
operation remain in line with the prior period.  Earnings for the
coil business have improved slightly due to product mix.  Although
this segment continues to be adversely impacted by legal and case
management costs associated with personal injury claims and
insurance recovery litigation related to asbestos-containing
products and indemnity payments not expected to be recovered from
insurance carriers, these costs decreased by approximately $285,000
for the three months ended March 31, 2005 against the same period
of the prior year.  Backlog approximated $28,917,000 as of March
31, 2005 in comparison to $26,252,000 as of December 31, 2004; the
increase is attributable to additional orders for the heat exchange
business.  Approximately $3,214,000 of the March 31, 2005 backlog
is scheduled for shipment beyond 2005.

Other (Expense) Income.  Other (expense) income for the three
months ended March 31, 2005 and 2004 approximated $(147,000) and
$182,000, respectively.  The change is due primarily to losses on
foreign exchange transactions in 2005 versus gains on foreign
exchange transactions in 2004.







                              - 16 -
Income Taxes.  The effective tax rate approximated 29.3% and 27.5%
for the three months ended March 31, 2005 and 2004, respectively.
The increase is due primarily to higher domestic profitability
partially offset by beneficial permanent deductions.

Net Income.  As a result of all of the above, the Corporation's net
income for the three months ended March 31, 2005 and 2004 equaled
$1,503,000 and $1,309,000, respectively.

Liquidity and Capital Resources

Net cash flows (used in) provided by operating activities
approximated $(5,577,000) and $2,170,000 for the three months ended
March 31, 2005 and 2004, respectively.  The decrease is
attributable primarily to an increase in accounts receivable
arising from higher sales for the first quarter of 2005 versus
first quarter of 2004 and a reduction in accounts payable due
primarily to timing of payments.

Net cash flows used in investing activities were $(1,434,000) and
$(6,658,000) for the three months ended March 31, 2005 and 2004,
respectively.  The decrease in the usage is primarily attributable
to a reduction in net purchases of short-term marketable
securities.  Capital expenditures approximated $634,000 for the
three months ended March 31, 2005 and $1,299,000 for the three
months ended March 31, 2004 of which approximately $923,000 of U.K.
governmental grants were received during the same period reducing
the net cost of the expenditures.  Additionally, the remaining sale
proceeds of $500,000 from the 2003 sale of the Plastics Processing
Machinery segment were received in 2004.  As of March 31, 2005,
future capital expenditures totaling $2,575,000 have been approved.
Funds on-hand and funds generated by future operations are expected
to be sufficient to finance capital expenditure requirements.

Net cash flows provided by (used in) financing activities were
$1,367,000 and $(416,000) for the three months ended March 31, 2005
and 2004, respectively.  As of March 31, 2005, Davy Roll had
borrowings outstanding under its line of credit of approximately
$2,234,000.  During each of the quarters, dividends were paid at a
rate of $0.10 per share.  Issuance of stock under the Corporation's
stock option plan provided cash of $108,000 and $550,000 for the
respective quarters.

The change in the value of the British pound against the dollar
impacted cash and cash equivalents by $44,000 and $(526,000) for
the three months ended March 31, 2005 and 2004.

The Corporation maintains short-term lines of credit in excess of
the cash needs of its businesses.  The total available at March 31,
2005 was approximately $6,300,000 (including 900,000 GBP in the
U.K. and 400,000 Euros in Belgium).

Litigation and Environmental Matters

See Note 10 to the condensed consolidated financial statements.

Recently Issued Accounting Pronouncements

In November 2004, the Financial Accounting Standards Board (FASB)
issued Statement of Financial Accounting Standards (SFAS) No. 151,
"Inventory


                              - 17 -


Costs" which confirms that accounting for abnormal amounts of idle
facility expense, freight, handling costs, and wasted material
(spoilage) be recognized as current period charges and that
allocation of fixed production overheads to inventories be based on
normal capacity of the production facilities. The provisions of
SFAS No. 151 will become effective for the Corporation on January
1, 2006 and are not expected to have a significant effect on its
financial condition or results of operations.

In December 2004, the FASB issued SFAS No. 153, "Exchanges of
Nonmonetary Assets" which amends previously issued guidance by
eliminating the exception from fair value measurement for
nonmonetary exchanges of similar productive assets and replaces it
with an exception for exchanges which do not have commercial
substance.  The provisions of SFAS No. 153 will become effective
for the Corporation on July 1, 2005.  Until the Corporation enters
into such transactions, the standard will not impact the
Corporation's financial condition or results of operations.

In December 2004, the FASB issued SFAS No. 123 (R), "Shared-Based
Payment" which requires companies to recognize compensation cost
for stock options and other stock-based awards based on their fair
value and companies will no longer be permitted to follow the
intrinsic value accounting method, which becomes effective for the
Corporation on January 1, 2006.  The Corporation will adopt the
standard prospectively.  Until the Corporation issues additional
stock options, the standard will not impact the Corporation's
financial condition or results of operations.

In March 2005, the FASB issued an interpretation of SFAS No. 143,
"Accounting for Conditional Asset Retirement Obligations" which
clarifies the term conditional asset retirement obligation.  The
interpretation did not impact the Corporation's financial condition
or results of operations.

Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a
safe harbor for forward-looking statements made by or on behalf of
the Corporation.  Management's Discussion and Analysis and other
sections of the Form 10-Q contain forward-looking statements that
reflect the Corporation's current views with respect to future
events and financial performance.  Forward-looking statements are
identified by the use of the words "believe," "expect,"
"anticipate," "estimate," "projects," "forecasts" and other
expressions that indicate future events and trends. Forward-looking
statements speak only as of the date on which such statements are
made, are not guarantees of future performance or expectations and
involve risks and uncertainties.  In addition, there may be events
in the future that the Corporation is not able to accurately
predict or control which may cause actual results to differ
materially from expectations expressed or implied by forward-
looking statements. The Corporation undertakes no obligation to
update any forward-looking statement, whether as a result of new
information, events or otherwise.  These forward-looking statements
shall not be deemed incorporated by reference by any general
statement incorporating by reference this Form 10-Q into any filing
under the Securities Act of 1933 or the Securities Exchange Act of
1934 and shall not otherwise be deemed filed under such Acts.



                              - 18 -


ITEM 3 - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

There were no material changes in the Corporation's exposure to
market risk from December 31, 2004.

                 ITEM 4 - CONTROLS AND PROCEDURES

(a) Disclosure controls and procedures. An evaluation of the
effectiveness of the Corporation's disclosure controls and
procedures as of the end of the period covered by this report was
carried out under the supervision, and with the participation, of
the management, including the principal executive officer and
principal financial officer.  Disclosure controls and procedures
are defined under Securities and Exchange Commission ("SEC") rules
as controls and other procedures that are designed to ensure that
information required to be disclosed by a company in reports that
it files under the Exchange Act recorded, processed, summarized and
reported within the required time periods.  As a result of the
restatement of the Corporation's consolidated balance sheet as of
December 31, 2004 as explained elsewhere in this Form 10-Q, the
Corporation's management, including the principal executive officer
and principal financial officer, have concluded that a material
weakness existed in the Corporation's internal control over
financial reporting with respect to classification of redeemable
instruments that are subject to remarketing agreements.  Solely as
a result of this material weakness, the Corporation's management,
including the principal executive officer and principal financial
officer, have concluded that the disclosure controls were not
effective as of March 31, 2005.

(c) Changes in internal control over financial reporting. Since
December 31, 2004, except as disclosed below, there have been no
changes in our internal control over financial reporting that have
materially affected, or are reasonably likely to materially affect,
our internal controls over financial reporting.

The Corporation's management, including the principal executive
officer and principal financial officer, believe that the material
weakness in the Corporation's internal control over financial
reporting with respect to classification of redeemable instruments
that are subject to remarketing agreements has been remediated.
The remedial actions included:

  -    Requiring all future debt agreements to be reviewed by the
       finance department for proper balance sheet classification.

  -    Improving understanding of relevant personnel of the
       requirements of EITF D-61, "Classification by the Issuer of
       Redeemable Instruments That Are Subject to Remarketing
       Agreements".









                              - 19 -


                    PART II - OTHER INFORMATION
                   AMPCO-PITTSBURGH CORPORATION


Item 1  Legal Proceedings

        The information contained in Note 10 to the condensed
        consolidated financial statements (Litigation and
        Environmental Matters) is incorporated herein by reference.

Items 2-5  None

Item 6     Exhibits

        (3)Articles of Incorporation and By-laws

            (a)  Articles of Incorporation

                 Incorporated by reference to the Quarterly Reports
                 on Form 10-Q for the quarters ended March 31, 1983,
                 March 31, 1984, March 31, 1985, March 31, 1987 and
                 September 30, 1998.

            (b)  By-laws

                Incorporated by reference to the Quarterly Reports
                on Form 10-Q for the quarters ended September 30,
                1994, March 31, 1996, June 30, 2001 and June 30,
                2004.

        (4)     Instruments defining the rights of securities holders

            (a) Rights Agreement between Ampco-Pittsburgh Corporation
                and Chase Mellon Shareholder Services dated as of
                September 28, 1998.


                Incorporated by reference to the Form 8-K Current
                Report dated September 28, 1998.

        (10)  Material Contracts

            (a)  1988 Supplemental Executive Retirement Plan

                 Incorporated by reference to the Quarterly Report
                 on Form 10-Q for the quarter ended March 31, 1996.

            (b)  Severance Agreements between Ampco-Pittsburgh
                 Corporation and certain officers and employees of
                 Ampco-Pittsburgh Corporation.

                 Incorporated by reference to the Quarterly Report
                 on Form 10-Q for the quarter ended September 30,
                 1988; the Quarterly Report on Form 10-Q for the
                 quarter ended September 30, 1994; the Annual
                 Report on Form 10-K for fiscal year ended December
                 31, 1994; the Quarterly Report on Form 10-Q for
                 the quarter ended June 30, 1997; the Annual Report
                 on Form 10-K for the fiscal year ended December
                 31, 1998; and the Quarterly Report on Form 10-Q
                 for the quarter ended June 30, 1999.

                              - 20 -


            (c)  1997 Stock Option Plan, as amended.

                 Incorporated by reference to the Proxy Statements
                 dated March 14, 1997 and March 15, 2000.

         (31.1)  Certification of the principal executive officer
                 pursuant to Section 302 of the Sarbanes-Oxley Act
                 of 2002

         (31.2)  Certification of the principal financial officer pursuant
                 to Section 302 of the Sarbanes-Oxley Act of 2002

         (32.1)  Certification of principal executive officer pursuant to
                 Section 906 of the Sarbanes-Oxley Act of 2002

         (32.2)  Certification of principal financial officer
                 pursuant to Section 906 of the Sarbanes-Oxley Act
                 of 2002









                              - 21 -




                            SIGNATURES




     Pursuant to the requirements of the Securities Exchange Act of
1934,  the  registrant has duly caused this report to be signed  on
its behalf by the undersigned thereunto duly authorized.





                                 AMPCO-PITTSBURGH CORPORATION




DATE:  May 16, 2005              BY:  s/Robert A. Paul
                                      Robert A. Paul
                                      Chairman and
                                        Chief Executive Officer




DATE:  May 16, 2005              BY:  s/Marliss D. Johnson
                                      Marliss D. Johnson
                                      Vice President
                                        Controller and Treasurer





























                              - 22 -






                   AMPCO-PITTSBURGH CORPORATION

                           EXHIBIT INDEX





Exhibit (31.1) Certification of principal executive officer pursuant
               to Section 302 of the Sarbanes-Oxley Act of 2002

        (31.2) Certification of principal financial
               officer pursuant to Section 302 of the Sarbanes-Oxley
               Act of 2002

Exhibit (32.1) Certification of principal executive
               officer pursuant to Section 906 of the Sarbanes-Oxley
               Act of 2002

        (32.2) Certification of principal financial officer pursuant to
               Section 906 of the Sarbanes-Oxley Act of 2002








































                              - 23 -