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, 2004

                              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 7, 2004, 9,707,497 common shares were outstanding.








                            - 1 -



                AMPCO-PITTSBURGH CORPORATION

                            INDEX



                                                         Page No.


Part I - Financial Information:

           Item 1 - Consolidated Financial Statements

           Consolidated Balance Sheets -
             March 31, 2004 and December 31, 2003              3

           Consolidated Statements of Operations -
             Three Months Ended March 31, 2004 and 2003        4

           Condensed  Consolidated Statements of Cash  Flows-
             Three Months Ended March 31, 2004 and 2003        5

           Notes to Consolidated Financial Statements          6

           Item 2 - Management's Discussion and Analysis
             of Financial Condition and Results of
             Operations                                       13

           Item 3 - Quantitative and Qualitative
           Disclosures About Market Risk                      16

           Item 4 - Controls and Procedures                   16

Part II - Other Information:

              Item 1 - Legal Proceedings                      17
              Item 5 - Other Information                      17
              Item 6 - Exhibits and Reports on Form 8-K       17

           Signatures                                         19

           Exhibit Index                                      20

           Exhibits

             Exhibit 31.1
             Exhibit 31.2
             Exhibit 32.1
             Exhibit 32.2


                            - 2 -



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

                                     March 31,      December 31,
                                       2004             2003


                                                

Assets
Current assets:
Cash and cash equivalents            $ 37,109,002     $ 35,738,789
Receivables, less allowance for
 doubtful accounts of $774,162 in
 2004 and $542,594 in 2003             37,677,532       38,801,415
Inventories                            53,626,381       48,260,368
Other                                   9,367,644       11,525,202
     Total current assets             137,780,559      134,325,774

Property, plant and equipment, at cost:
  Land and land improvements            4,220,267        4,219,403
 Buildings                             25,139,368       25,148,729
  Machinery and equipment             130,653,281      130,015,316
                                      160,012,916      159,383,448
  Accumulated depreciation             91,551,092       89,885,025
     Net property, plant and equipment 68,461,824       69,498,423
Prepaid pensions                       24,366,733       24,104,233
Goodwill                                2,694,240        2,694,240
Other noncurrent assets                 3,490,049        3,500,869
                                     $236,793,405     $234,123,539

Liabilities and Shareholders' Equity
Current liabilities:
Accounts payable                     $ 12,133,259     $ 11,760,521
Accrued payrolls and employee benefits  7,665,820        7,930,282
Other                                  15,458,530       14,338,231
     Total current liabilities         35,257,609       34,029,034
Employee benefit obligations           16,372,999       16,680,481
Deferred income taxes                  20,852,713       20,555,776
Industrial Revenue Bond debt           13,311,000       13,311,000
Other noncurrent liabilities            4,129,242        5,002,033
     Total liabilities                 89,923,563       89,578,324
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 9,707,497 in 2004 and
 9,653,497 in 2003                      9,707,497        9,653,497
Additional paid-in capital            103,771,130      103,211,130
Retained earnings                      39,801,782       39,564,359
Accumulated other comprehensive loss   (6,410,567)      (7,883,771)
     Total shareholders' equity       146,869,842      144,545,215
   Total liabilities and shareholders'
     equity                          $236,793,405     $234,123,539




       See Notes to Consolidated Financial Statements.



                            - 3 -

                AMPCO-PITTSBURGH CORPORATION
            CONSOLIDATED STATEMENTS OF OPERATIONS
                         (UNAUDITED)

                                    Three Months Ended March 31,
                                         2004           2003




                                                    

Net sales                           $ 46,786,579      $ 43,530,395

Operating costs and expenses:
Costs of products sold
  (excluding depreciation)            36,751,562        34,425,478
Selling and administrative             6,807,279         6,804,875
Depreciation                           1,596,516         1,601,601
Loss on disposition of assets              8,968             8,450
  Total operating expense             45,164,325        42,840,404

Income from operations                 1,622,254           689,991

Other income (expense):
  Interest expense                       (61,066)          (93,417)
  Other - net                            243,385          (151,913)
                                         182,319          (245,330)

Income from continuing operations
  before income taxes                  1,804,573           444,661
Income tax provision                     596,000           292,000
Income from continuing operations      1,208,573           152,661

Discontinued operations:
  Income from operations                       -            80,912
  Income tax provision                         -            37,000
                                               -            43,912

Net income                            $1,208,573      $    196,573


Basic and diluted earnings per
 common share:

 Income from continuing operations    $     0.12      $       0.02

 Income from discontinued
   operations                         $        -      $          -

 Net income                           $     0.12      $       0.02

Cash dividends declared per share     $     0.10      $       0.10

Weighted average number of common
 shares outstanding                    9,682,398         9,632,497







       See Notes to Consolidated Financial Statements.

                            - 4 -





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



                                        Three Months Ended March 31,
                                             2004          2003



                                                    

Net cash flows provided by (used in)
 operating activities                   $ 2,170,311    $(2,281,295)

Cash flows from investing activities:
 Purchases of property, plant
  and equipment                          (1,298,682)      (970,280)
 Proceeds from sale of businesses           500,000              -
 Proceeds from grant                        922,500              -
 Proceeds from sale of assets                18,075              -
 Investing activities of discontinued
  operations                                      -       (217,120)

  Net cash flows provided by (used in)
   investing activities                     141,893     (1,187,400)

Cash flows from financing activities:
 Proceeds from the issuance of
  common stock                              550,000               -
 Dividends paid                            (965,750)       (963,250)

  Net cash flows (used in) financing
   activities                              (415,750)       (963,250)

Effect of exchange rate changes on cash
 and cash equivalents                      (526,241)         12,767

Net increase (decrease) in cash and
 cash equivalents                         1,370,213      (4,419,178)
Cash and cash equivalents at
 beginning of period                     35,738,789      27,788,798

Cash and cash equivalents at
 end of period                         $ 37,109,002    $ 23,369,620


Supplemental information:
 Income tax payments                   $     52,440    $    115,215
 Interest payments                     $     64,462    $     82,349






       See Notes to Consolidated Financial Statements.


                            - 5 -



                   AMPCO-PITTSBURGH CORPORATION
            NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. Unaudited Consolidated Financial Statements

   The consolidated balance sheet as of March 31, 2004, the
   consolidated statements of operations for the three months ended
   March 31, 2004 and 2003 and the condensed consolidated
   statements of cash flows for the three months ended March 31,
   2004 and 2003 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.

   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. In addition, the
   Corporation sold the stock of its Plastics Processing Machinery
   segment in 2003 (see Note 9) which was accounted for as a
   discontinued operation.  Accordingly, the results of operations
   for this segment for the prior period have been reclassified and
   presented net of tax in the accompanying consolidated statements
   of operations. These consolidated financial statements should be
   read in conjunction with the consolidated financial statements
   and notes thereto incorporated by reference in the Corporation's
   annual report to shareholders on Form 10-K for the year ended
   December 31, 2003.  The results of operations for the three
   months ended March 31, 2004 are not necessarily indicative of
   the operating results expected for the full year.

2. Inventories

   At March 31, 2004 and December 31, 2003, approximately 67% and
   70%, 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,
                                            2004         2003

   Raw materials                          $13,164      $11,803
   Work-in-process                         25,258       23,392
   Finished goods                           9,669        7,894
   Supplies                                 5,535        5,171
                                          $53,626      $48,260





                               - 6 -



3. Other Current Liabilities

   Other current liabilities were comprised of the following:

                                             (in thousands)
                                         March 31,   December 31,
                                            2004         2003

   Customer-related                      $ 5,718       $ 5,674
   Forward exchange contracts              2,393         2,335
   Other                                   7,348         6,329
                                         $15,459       $14,338

   Included in customer-related liabilities are costs expected to
   be incurred with respect to product warranties.  There have been
   no significant changes in the liability for product warranty
   claims for the three months ended March 31, 2004.

4. Comprehensive Income (Loss)

   The Corporation's comprehensive income (loss) for the three
   months ended March 31, 2004 and 2003 consisted of:

                                                  (in thousands)
                                                 Three Months
                                                 Ended March 31,
                                               2004          2003

   Net income                                $ 1,208      $  197
   Foreign currency translation                  928        (217)
   Minimum pension liability                    (385)          7
   Unrealized holding gains (losses)
    on marketable securities                       2         (93)
   Change in fair value of derivatives           928        (103)
   Comprehensive income (loss)               $ 2,681      $ (209)

5. Foreign Exchange

   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
   hedges or cash flow hedges.  As of March 31, 2004, approximately
   $37,196,000 of anticipated foreign denominated sales has been
   hedged with the underlying contracts settling at various dates
   beginning in 2004 through January 2009.  As of March 31, 2004,
   the fair value of contracts expected to settle within the next
   12 months, which is recorded in other current liabilities,
   approximated $2,393,000 and the fair value of the remaining
   contracts, which is recorded in other noncurrent liabilities,
   approximated $1,274,000.  The change in the fair value of the
   contracts designated as cash flow hedges is recorded as a
   component of accumulated other comprehensive loss and
   approximated $(1,487,000), net of taxes, as of March 31, 2004.
   The change in fair value will be reclassified into earnings when
   the projected sales occur with approximately $(802,000), net of
   taxes, expected to be released to earnings within the next 12
   months.  During the three months ended March 31, 2004 and 2003,

                               - 7 -


   approximately $(464,000) and $(239,000) was released into earnings.

   Gains (losses) on foreign exchange transactions approximated
   $222,000 and $(163,000) for the three months ended March 31,
   2004 and 2003, respectively.

   In addition, one of the Corporation's subsidiaries is subject to
   risk from increases in the price of a commodity 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, 2004, approximately 100% or $1,932,000 of
   anticipated commodity purchases over the next 12 months is
   hedged.  The fair value of the contracts expected to settle
   within the next 12 months approximated $806,000 and the fair
   value of the remaining contracts approximated $12,000 as of
   March 31, 2004.  The change in the fair value of the contracts
   is recorded as a component of accumulated other comprehensive
   loss and approximated $490,000, net of taxes, as of March 31,
   2004.  The change in the fair value will be reclassified into
   earnings when the projected sales occur with approximately
   $483,000, net of taxes, expected to be released to earnings
   within the next 12 months.

6. Pension and Other Postretirement Benefits

   No contributions were made to the U.S. pension benefit plans
   during the three months ended March 31, 2004. Contributions to
   the foreign pension plan approximated $130,000 and net payments
   for other postretirement benefits approximated $79,000 for the
   three months ended March 31, 2004.

   Net periodic pension and other postretirement costs include the
   following components for the three months ended March 31, 2004
   and 2003:

                                      (in thousands)
                             U.S.        Foreign         Other
                          Pension        Pension   Postretirement
                         Benefits       Benefits        Benefits

                        2004   2003    2004  2003     2004   2003

   Service cost      $   518 $  537  $ 277   $ 200  $  60   $  55
   Interest cost       1,658  1,701    464     339    196     195
   Expected return on
     plan assets      (2,553)(2,705)  (437)   (337)     -       -
   Amortization of
     prior service
     cost (benefit)      147    136    194     140   (137)   (137)
   Actuarial
     (gain) loss         (30)     -      -       -     39      13
   Net benefit
     (income) cost    $ (260)$ (331)  $ 498   $ 342  $ 158   $ 126

7. Earnings Per Share

   Basic earnings per share are computed by dividing income from
   continuing operations, income from discontinued operations, and
   net income by the weighted average number of common shares
   outstanding for the period.  The weighted average number of
   common shares outstanding for the three months ended March 31,
   2004 and 2003 equaled 9,682,398 and 9,632,497 shares,
   respectively.

                               - 8 -


   The computation of diluted earnings per share is similar to
   basic earnings per share except that the denominator is
   increased to include the dilutive effect of the net additional
   common shares that would have been outstanding assuming exercise
   of outstanding stock options, calculated using the treasury
   stock method.  The weighted average number of common shares
   outstanding assuming exercise of the stock options was 9,748,644
   and 9,688,242 shares for the three months ended March 31, 2004
   and 2003, respectively.

8. Business Segments

   Presented below are the net sales and income before taxes for
   the Corporation's two business segments.
                                               (in thousands)
                                          Three Months Ended
                                               March 31,
                                         2004             2003
   Net Sales:
    Forged and Cast Rolls              $ 29,771      $ 24,798
    Air and Liquid Processing            17,016        18,732
     Total Reportable Segments         $ 46,787      $ 43,530

   Income before taxes:
    Forged and Cast Rolls              $  1,720      $    957
    Air and Liquid Processing             1,117         1,028
     Total Reportable Segments            2,837         1,985
     Other expense, including
      corporate costs - net              (1,032)       (1,540)

       Total                           $  1,805      $    445

   Income before taxes for the Air and Liquid Processing segment
   for the three months ended March 31, 2004 and 2003 includes
   approximately $475,000 and $529,000 for legal and case
   management costs for personal injury claims litigation related
   to asbestos-containing product and indemnity payments not
   expected to be recovered from insurance carriers (see Note 10).

9. Acquisitions and Divestitures

  The Corporation sold the stock of the New Castle Industries, Inc.
  group of companies constituting its small Plastics Processing
  Machinery segment on August 15, 2003.  Results of operations for
  the first quarter of 2003 for this segment of approximately
  $81,000 have been reclassified to discontinued operations.  Net
  sales for this segment approximated $6,149,000 for the first
  quarter of 2003.

  In connection with the sale, the Corporation provided typical
  representations and warranties to the buyer, which primarily
  expire with the statutes of limitations.  Losses suffered by the
  buyer as a result of the Corporation's breach of representations
  and warranties are reimbursable by the Corporation up to
  approximately $2,000,000.  The Corporation believes no additional
  amounts will become due as a result of a breach.

  The Corporation continues to evaluate potential acquisitions to
  ensure that long-term objectives of achieving maximum shareholder
  value are met.

                               - 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,
                                              2004

      Approximate open claims at end of      21,000
        period
      Gross settlement and defense             $651
        costs (in 000's)
      Claims settled without payment            176
        during period



  Of the 21,000 claims open, 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

                              - 10 -


  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.  On
  February 23, 2004, the Policyholder Defendants filed an
  opposition to Utica's attempt to seek additional relief against
  them in the Oneida County Litigation, and filed a separate motion
  to dismiss them from that litigation with prejudice.  Both issues
  are currently pending before the Court.

  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, and has asserted a counterclaim
  against Howden.  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 are otherwise without merit, and has asserted that
  position in both lawsuits.  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

                              - 11 -


  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 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 and other
  issues.  Those costs amounted to approximately $500,000 in the
  first quarter of 2004 in comparison to $600,000 for the first
  quarter of 2003.

  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 one third-party landfill site
  used by a division that was previously sold. In addition, as a
  result of the sale of the Plastics Processing Machinery segment,
  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 at a cost estimate of $2,100,000 which will be paid
  over several years and was provided for in the third quarter of
  2003.  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.


















                              - 12 -





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

Executive Overview

The Executive Overview of Management's Discussion and Analysis
should be read in conjunction with the consolidated financial
statements and notes thereto incorporated by reference in Ampco-
Pittsburgh Corporation's (the Corporation) annual report to
shareholders on Form 10-K for the year ended December 31, 2003.

The Corporation operates in two business segments - the Forged and
Cast Rolls segment and the Air and Liquid Processing segment.  The
Corporation's businesses are cyclical and have been affected by the
severe downturn in the economy and lack of capital spending by the
manufacturing sector.

The improvement in demand from the global steel industry for forged
and cast rolls, which began in latter part of 2003, resulted in the
segment having its largest backlog (unfilled orders on hand) for
many years.  The weakening of the dollar and the British pound
particularly in relation to the Euro has improved export sales.
The exception being the weaker dollar to the British pound which
has adversely impacted sales from the United Kingdom to U.S.
customers.  Escalation in the price of steel scrap and alloys to
unprecedented levels together with the high cost of natural gas has
significantly reduced margins.  Although raw material surcharges
and price increases have been implemented on new orders, margins
will not improve until the latter part of 2004 due to the existing
high level of backlog.

Because of long lead times for products, the Air and Liquid
Processing segment was not affected by the weak economy until 2003.
Similarly, any rebound in the economy will not immediately improve
operating results.  In particular, demand for lube oil pumps is
expected to remain at low levels for the foreseeable future due to
an oversupply of gas turbines in the market.  The segment is also
being impacted by an escalation in commodity prices and because of
severe competition only a portion can be passed onto customers.  A
significant increase in capital spending is necessary before
earnings will improve.

Operations for the Three Months Ended March 31, 2004 and 2003

Net Sales.  Net sales for the three months ended March 31, 2004
were $46,787,000 compared to $43,530,000 for the same period of
2003.  A discussion of the first quarter sales for the
Corporation's two segments is included below.  Backlog approximated
$133,331,000 at March 31, 2004 in comparison to $112,923,000 at
December 31, 2003 with improvement at each of the segments.

Costs of Products Sold.  Costs of products sold, excluding
depreciation, remained consistent at 78.6% and 79.1% of net sales
for the three months ended March 31, 2004 and 2003, respectively.

Selling and Administrative.  Selling and administrative expenses
were comparable for the three months ended March 31, 2004 and 2003.



                              - 13 -



Income from Operations.  Income from operations for the three
months ended March 31, 2004 approximated $1,622,000 in comparison
to $690,000 for the same period of the prior year.  A discussion of
first quarter results for the Corporation's two segments is
included below.

Forged and Cast Rolls.  Sales and operating income for the three
months ended March 31, 2004 were better than the comparable prior
year period.  A strong backlog contributed to the increase in
sales, including an improvement in the level of export sales which
have been aided by favorable foreign exchange rates.  Significantly
higher natural gas and raw material costs have negatively impacted
operating results.  Backlog approximated $97,403,000 as of March
31, 2004 in comparison to $79,515,000 as of March 31, 2003. The
increase is reflective of the improvement in demand for both the
U.S. and U.K. operations and closure of several foreign
competitors.

Air and Liquid Processing.  Despite the decrease in sales for the
three months ended March 31, 2004 against the comparable prior year
period, earnings improved slightly due to an increase in shipments
of replacement pumps parts.  However, reduced spending in the
construction markets and for capital equipment resulted in lower
sales of air handling units and heat exchange equipment.  The
segment was adversely impacted by legal and case management costs
for personal injury claims litigation related to asbestos-
containing product and indemnity payments not expected to be
recovered from insurance carriers of approximately $475,000 and
$529,000 for the first quarter of 2004 and 2003, respectively.
Backlog approximated $35,928,000 as of March 31, 2004 in comparison
to $29,095,000 as of March 31, 2003; the increase is attributable
to one large contract for air handling units.

Other Income (Expense).  The fluctuation in other income (expense)
is attributable primarily to foreign exchange gains realized in the
first quarter 2004 principally due to the strengthening of the
British pound against the dollar in comparison to losses on foreign
exchange transactions in 2003.

Income Taxes.  The effective tax rate for continuing operations for
the three months ended March 31, 2004 approximated 33.0% in
comparison to 65.7% for the comparable prior year period.  The 2003
effective rate includes establishing valuation allowances against
certain foreign net operating losses and foreign tax credits.

Discontinued Operations.  Income from discontinued operations
includes, net of tax, the results of operations for the Plastic
Processing Machinery segment which was sold in August 2003.  This
segment earned pre-tax income of approximately $81,000 for the
three months ended March 31, 2003 on sales of $6,149,000.

Net Income.  As a result of all of the above, the Corporation
earned net income for the three months ended March 31, 2004 of
$1,208,000 in comparison to $197,000 for the three months ended
March 31, 2003.

Liquidity and Capital Resources

Net cash flows provided by operating activities amounted to
$2,170,000 for the three months ended March 31, 2004 in comparison
to $(2,281,000)


                              - 14 -



for the three months ended March 31, 2003.  The improvement is due
primarily to higher earnings and reimbursement of value-added taxes
for the U.K. operations during the first quarter of 2004.

Net cash flows provided by investing activities were $142,000 for
the three months ended March 31, 2004 in comparison to a net use of
$1,187,000 for the three months ended March 31, 2003.  Capital
expenditures approximated $1,299,000 and $970,000, respectively,
for the same periods then ended.  As of March 31, 2004, future
capital expenditures totaling $5,593,000 have been approved.  Funds
on-hand, funds generated by future operations, proceeds from grants
of which $923,000 has been received to date and available lines of
credit are expected to be sufficient to finance capital expenditure
requirements.  The Corporation also received the final proceeds
from the sale of its Plastics Processing Machinery segment of
$500,000 during the first quarter of 2004.

Net cash flows used in financing activities were $416,000 for the
three months ended March 31, 2004 and related to the payment of
quarterly dividends at a rate of $0.10 per share offset by the
proceeds from the issuance of stock under the Corporation's stock
option plan.  Net cash flows used in financing activities for the
three months ended March 31, 2003 were $963,000 and related to the
payment of dividends at a rate of $0.10 per share.

The increase in the value of the British pound against the dollar
reduced cash and cash equivalents by $526,000.

The Corporation maintains short-term lines of credit in excess of
the cash needs of its businesses.  The total available at March 31,
2004 was approximately $8,000,000 (including 2,100,000 British pounds
in the U.K. and 400,000 Euro in Belgium).

Litigation and Environmental Matters

See Note 10 to the consolidated financial statements.

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


                              - 15 -



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.

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, 2003.

ITEM 4 - CONTROLS AND PROCEDURES

(a) Disclosure controls and procedures. As of the end of the period
covered by this Form 10-Q, the Corporation evaluated the
effectiveness of the design and operation of its disclosure
controls and procedures. Disclosure controls and procedures are the
controls and other procedures designed to ensure that the
information required to be disclosed in reports filed with or
submitted to the SEC are recorded, processed, summarized and
reported in a timely manner.  Robert A. Paul, Chief Executive
Officer, and Marliss D. Johnson, Vice President, Controller and
Treasurer, reviewed and participated in this evaluation. Based on
this evaluation, Messrs. Paul and Johnson concluded that, as of the
end of the period covered by this Form 10-Q, the Corporation's
disclosure controls were effective.

(b) Internal controls over financial reporting. Since the date of
the evaluation described above, there have not been any significant
changes in the Corporation's internal controls over financial
reporting or in other factors that could significantly affect those
controls.

















                              - 16 -




                    PART II - OTHER INFORMATION
                   AMPCO-PITTSBURGH CORPORATION


Item 1  Legal Proceedings

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

Items 2-4None

Item 5  Other Information

        The Corporation's chief executive officer and chief
        financial officer have provided the certifications with
        respect to the Form 10-Q that are required by Sections 302
        and 906 of the Sarbanes-Oxley Act of 2002.  These
        certifications have been filed as Exhibits 31.1 and 31.2
        and Exhibits 32.1 and 32.2, respectively.

Item 6  Exhibits and Reports on Form 8-K

     (a)   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 March 31, 1996
                 and June 30, 2001.

        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.


                              - 17 -


                 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.

            (c)  1997 Stock Option Plan, as amended.

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

        31.  Rule 13a-14(a)/15d-14(a) Certifications

                 (1)  Certification of Chief Executive Officer
                      pursuant to Section 302 of the Sarbanes-Oxley Act
                      of 2002

                 (2)  Certification of Vice President, Controller and Treasurer
                      pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

        32. Section 1350 Certifications

                 (1)  Certification of Chief Executive Officer pursuant to
                      Section 906 of the Sarbanes-Oxley Act of 2002

                 (2)  Certification of Vice President, Controller and Treasurer
                      pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

     (b) Reports on Form 8-K

         Dated January 27, 2004 announcing the Corporation's
         results for 2003.

         Dated February 13, 2004 announcing revision to the
         Corporation's results for 2003.











                              - 18 -



                            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 7, 2004               BY:  s/Robert A. Paul
                                      Robert A. Paul
                                      President and
                                        Chief Executive Officer




DATE:  May 7, 2004               BY:  s/Marliss D. Johnson
                                      Marliss D. Johnson
                                      Vice President
                                        Controller and Treasurer




















                              - 19 -



                   AMPCO-PITTSBURGH CORPORATION

                           EXHIBIT INDEX





Exhibit 31 - Rule 13a-14(a)/15d-14(a) Certifications

             (1)  Certification of Chief Executive Officer pursuant to Section
                  302 of the Sarbanes-Oxley Act of 2002

             (2)  Certification of Vice President, Controller and Treasurer
                  pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 32 - Section 1350 Certifications

             (1)  Certification of Chief Executive Officer pursuant to Section
                  906 of the Sarbanes-Oxley Act of 2002

             (2)  Certification of Vice President, Controller and Treasurer
                  pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

























                              - 20 -