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 June 30, 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 August 5, 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 -
             June 30, 2004 and December 31, 2003             3

           Consolidated Statements of Operations -
             Six Months Ended June 30, 2004 and 2003
             Three Months Ended June 30, 2004 and 2003       4

           Condensed  Consolidated Statements of Cash  Flows-
             Six Months Ended June 30, 2004 and 2003         5

           Notes to 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                              17

           Item 4 - Controls and Procedures                 17

Part II - Other Information:

              Item 1 - Legal Proceedings                    18

              Item 4 - Submission of Matters to a Vote of
                        Security Holders                    18

              Item 5 - Other Information                    18

              Item 6 - Exhibits and Reports on Form 8-K     18

           Signatures                                       20

           Exhibit Index                                    21

           Exhibits

             Exhibit 3
             Exhibit 31.1
             Exhibit 31.2
             Exhibit 32.1
             Exhibit 32.2


                            - 2 -




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




                                                     

                                     June 30,        December 31,
                                       2004              2003
Assets
Current assets:
Cash and cash equivalents           $ 36,731,647     $ 35,738,789
Receivables, less allowance for
 doubtful accounts of $872,603 in
 2004 and $542,594 in 2003            38,701,918       38,801,415
Inventories                           52,409,773       48,260,368
Other                                  7,779,052       11,525,202
     Total current assets            135,622,390      134,325,774

Property, plant and equipment,
 at cost:
  Land and land improvements           4,219,858        4,219,403
 Buildings                            25,131,286       25,148,729
  Machinery and equipment            132,291,369      130,015,316
                                     161,642,513      159,383,448
  Accumulated depreciation            92,976,634       89,885,025
     Net property, plant and
      equipment                       68,665,879       69,498,423
Prepaid pensions                      24,629,233       24,104,233
Goodwill                               2,694,240        2,694,240
Other noncurrent assets                3,554,728        3,500,869
                                    $235,166,470     $234,123,539

Liabilities and Shareholders' Equity
Current liabilities:
Accounts payable                    $ 11,819,428     $ 11,760,521
Accrued payrolls and employee
 benefits                              8,259,227        7,930,282
Other                                 14,233,974       14,338,231
     Total current liabilities        34,312,629       34,029,034
Employee benefit obligations          16,420,224       16,680,481
Deferred income taxes                 20,794,242       20,555,776
Industrial Revenue Bond debt          13,311,000       13,311,000
Other noncurrent liabilities           4,070,901        5,002,033
     Total liabilities                88,908,996       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                    39,670,657       39,564,359
Accumulated other comprehensive loss (6,891,810)      (7,883,771)
     Total shareholders' equity     146,257,474      144,545,215
   Total liabilities and
    shareholders' equity           $235,166,470     $234,123,539





       See Notes to Consolidated Financial Statements.

                            - 3 -




                AMPCO-PITTSBURGH CORPORATION
            CONSOLIDATED STATEMENTS OF OPERATIONS
                         (UNAUDITED)






                                                            

                            Six Months Ended June 30,  Three Months Ended June 30,
                                 2004         2003         2004         2003

Net sales                  $100,432,174 $ 89,025,426  $ 53,645,595 $ 45,495,031

Operating costs and expenses:
 Costs of products sold
  (excluding depreciation)   80,169,079   69,714,842    43,417,517   35,289,364
 Selling and administrative  13,856,430   13,922,458     7,049,151    7,117,583
 Depreciation                 3,209,958    3,199,763     1,613,442    1,598,162
 Loss (gain) on disposition
  of assets                       3,733       (8,854)       (5,235)     (17,304)
  Total operating expenses   97,239,200   86,828,209    52,074,875   43,987,805

Income from operations        3,192,974    2,197,217     1,570,720    1,507,226

Other income (expense):
  Interest expense             (127,658)    (163,323)      (66,592)     (69,906)
  Other - net                   395,881     (237,470)      152,496      (85,557)
                                268,223     (400,793)       85,904     (155,463)

Income from continuing operations
 before income taxes          3,461,197    1,796,424     1,656,624    1,351,763
Income tax provision          1,413,000    1,069,000       817,000      777,000
Income from continuing
 operations                   2,048,197      727,424       839,624      574,763

Discontinued operations:
 Loss from operations                 -     (189,803)            -     (270,715)
 Income tax benefit                   -      (50,000)            -      (87,000)
                                      -     (139,803)            -     (183,715)

Net income                 $  2,048,197 $    587,621  $    839,624 $    391,048

Basic and diluted earnings
 per common share:
  Net income from continuing
   operations              $       0.21 $      0.08   $      0.09  $       0.06

  Net loss from discontinued
   operations              $          - $     (0.02)  $         -  $      (0.02)

  Net income               $       0.21 $      0.06   $      0.09  $       0.04

Cash dividends declared
 per share                 $       0.20 $      0.20   $      0.10  $       0.10

Weighted average number of
 common shares outstanding    9,694,948   9,632,497     9,707,497     9,632,497





            See Notes to Consolidated Financial Statements.


                               - 4 -




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





                                                         

                                           Six Months Ended June 30,

                                             2004             2003

Net cash flows provided by operating
 activities                             $  4,328,210      $  3,208,167

Cash flows from investing activities:
 Purchases of property, plant and
  equipment                               (3,221,940)       (2,405,341)
 Proceeds from sale of business              500,000                 -
 Proceeds from grant                         922,500                 -
 Proceeds from sale of assets                 38,757               818
 Investing activities of discontinued
  operations                                       -          (230,130)

  Net cash flows used in investing
   activities                             (1,760,683)       (2,634,653)

Cash flows from financing activities:
 Proceeds from the issuance of common stock  624,000                 -
 Dividends paid                           (1,936,500)       (1,926,500)

  Net cash flows used in financing
   activities                             (1,312,500)       (1,926,500)

Effect of exchange rate changes on cash
 and cash equivalents                       (262,169)          244,269

Net increase (decrease) in cash and
 cash equivalents                            992,858        (1,108,717)
Cash and cash equivalents at
 beginning of period                      35,738,789        27,788,798

Cash and cash equivalents at
 end of period                          $ 36,731,647      $ 26,680,081


Supplemental information:
 Income tax payments                    $    553,639      $    216,217
 Interest payments                      $    128,518      $    166,279






       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 June 30, 2004, the
   consolidated statements of operations for the six and three
   months ended June 30, 2004 and 2003 and the condensed
   consolidated statements of cash flows for the six months ended
   June 30, 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 periods 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 six and three months ended June 30, 2004 are not
   necessarily indicative of the operating results expected for the
   full year.

2. Inventories

   At June 30, 2004 and December 31, 2003, approximately 65% 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)
                                          June 30,   December 31,
                                             2004         2003

   Raw materials                          $13,196      $11,803
   Work-in-process                         24,147       23,392
   Finished goods                           8,894        7,894
   Supplies                                 6,173        5,171
                                          $52,410      $48,260





                               - 6 -




3. Other Current Liabilities

   Other current liabilities were comprised of the following:

                                               (in thousands)
                                         June 30,   December 31,
                                           2004        2003

   Customer-related                      $ 4,590       $ 5,674
   Forward exchange contracts              1,424         2,335
   Other                                   8,220         6,329
                                         $14,234       $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 six months ended June 30, 2004.

4. Comprehensive Income

   The Corporation's comprehensive income for the six and three
   months ended June 30, 2004 and 2003 consisted of:

   

                                                  

                                             (in thousands)
                                    Six Months        Three Months
                                   Ended June 30,    Ended June 30,
                                   2004    2003      2004     2003

   Net income                    $2,048  $  588    $   840 $   391
   Foreign currency translation     453     551       (476)    767
   Adjustment to minimum pension
    liability                      (258)      -        127     (7)
   Unrealized holding gains
    on marketable securities         62      26         60    119
   Change in fair value
    of derivatives                  735    (293)      (192)  (190)
   Comprehensive income          $3,040  $  872     $  359 $1,080



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 June 30, 2004, approximately
   $42,451,000 of anticipated foreign denominated sales have been
   hedged with the underlying contracts settling at various dates
   beginning in 2004 through July 2009.  As of June 30, 2004, the
   fair value of contracts expected to settle within the next 12
   months, which is recorded in other current liabilities,
   approximated $1,424,000 and the fair value of the remaining
   contracts, which is recorded in other noncurrent liabilities,
   approximated $1,447,000.  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 ($1,378,000), net of taxes, as of June 30, 2004.
   The change in fair



                               - 7 -


   value will be reclassified into earnings when the projected
   sales occur with approximately $(589,000), net of taxes,
   expected to be released to earnings within the next 12 months.
   During the six months ended June 30, 2004 and 2003,
   approximately $(529,000) and $(358,000), respectively, net of
   taxes, were released into earnings and for the three months
   ended June 30, 2004 and 2003, approximately $(251,000) and
   $(215,000), respectively, net of taxes, were released.

   Gains (losses) on foreign exchange transactions approximated
   $286,000 and $(245,000) for the six months ended June 30, 2004
   and 2003 respectively, and $65,000 and $(82,000) for the three
   months ended June 30, 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 June 30, 2004, approximately 100% or $2,121,000 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 $312,000 and the fair
   value of the remaining contracts approximated $3,000 as of June
   30, 2004.  The change in the fair value of the contracts is
   recorded as a component of accumulated other comprehensive loss
   and approximated $189,000, net of taxes, as of June 30, 2004.
   The change in the fair value will be reclassified into earnings
   when the projected sales occur with approximately $187,000, 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 six months ended June 30, 2004.  Contributions to the
   foreign pension plan approximated $264,000 and net payments for
   other postretirement benefits approximated $410,000 for the six
   months ended June 30, 2004.

   Net periodic pension and other postretirement benefit costs
   include the following components for the six and three months
   ended June 30, 2004 and 2003:

   

                                                

                                           (in thousands)
                                        U.S. Pension Benefits:
                                   Six Months        Three Months
                                  Ended June 30,     Ended June 30,
                                  2004     2003       2004    2003

   Service cost                 $ 1,037  $ 1,074  $    518  $  537
   Interest cost                  3,315    3,402     1,658   1,701
   Expected return on plan assets(5,105)  (5,410)   (2,553) (2,705)
   Amortization of prior
    service cost                    296      275       148     138
   Actuarial gain                   (62)      (2)      (31)     (1)
   Net benefit income           $  (519) $  (661)   $ (260) $ (330)

   



                               - 8 -



   

                                                 

                                           (in thousands)
                                      Foreign Pension Benefits:
                                    Six Months       Three Months
                                   Ended June 30,    Ended June 30,
                                   2004    2003      2004    2003

   Service cost                   $ 551   $ 400   $  277  $  200
   Interest cost                    921     679      464     339
   Expected return on plan assets  (869)   (673)    (437)   (336)
   Amortization of prior
    service cost                    386     279      194     140
   Net benefit cost               $ 989   $ 685   $  498  $  343



                                          (in thousands)
                                   Other Postretirement Benefits:
                                     Six Months      Three Months
                                    Ended June 30,  Ended June 30,
                                    2004     2003    2004    2003

   Service cost                   $  119   $  109  $   60  $   55
   Interest cost                     391      391     196     195
   Amortization of prior
    service benefit                 (274)    (274)   (137)   (137)
   Actuarial loss                     79       27      39      14
   Net benefit cost               $  315   $  253  $  158  $  127





7. Earnings Per Share

   Basic earnings per share are computed by dividing income from
   continuing operations, loss from discontinued operations, and
   net income by the weighted average number of common shares
   outstanding for each of the periods.  The weighted average
   number of common shares outstanding for the six and three months
   ended June 30, 2004 were 9,694,948 and 9,707,497 and for the
   same periods of the prior year were 9,632,497.

   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 stock options was 9,755,042 and
   9,760,061 shares for the six and three months ended June 30,
   2004, respectively, and 9,698,501 and 9,706,863 for the six and
   three months ended June 30, 2003, respectively.










                               - 9 -






8. Business Segments

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

   

                                                 

                                           (in thousands)
                               Six Months Ended  Three Months Ended
                                     June 30,         June 30,
                                  2004     2003     2004     2003
   Net Sales:
    Forged and Cast Rolls      $ 63,285 $ 52,388 $ 33,515 $ 27,590
    Air and Liquid Processing    37,147   36,637   20,131   17,905
     Total Reportable Segments $100,432 $ 89,025 $ 53,646 $ 45,495

   Income from continuing oper-
    ations before income taxes:
     Forged and Cast Rolls     $  3,222 $  2,797 $  1,501  $ 1,840
     Air and Liquid Processing    2,437    1,863    1,319      835
      Total Reportable Segments   5,659    4,660    2,820    2,675
      Other expense, including
       corporate costs - net     (2,198)  (2,864)  (1,163)  (1,323)

        Total                  $  3,461 $  1,796 $  1,657  $ 1,352

   

   Income from continuing operations before income taxes for the
   Air and Liquid Processing segment for the six months ended June
   30, 2004 and 2003 includes approximately $718,000 and
   $1,180,000, respectively, and for the three months ended June
   30, 2004 and 2003 includes approximately $244,000 and $643,000,
   respectively, for legal and case management costs associated
   with personal injury claims litigation related to asbestos-
   containing products 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 six and three months ended June 2003 for this segment of
  approximately $(190,000) and $(271,000) have been reclassified to
  discontinued operations.  Net sales for this segment approximated
  $12,401,000 and $6,252,000 for the same periods.

  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.

                              - 10 -


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:


                                                          2004

       Approximate open claims as of June 30, 2004      24,700


       Gross settlement and defense costs (in 000's)   $ 1,261
       for the six months ended June 30, 2004

       Approximate claims settled or dismissed for         218
       the six months ended June 30, 2004



  Of the 24,700 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 costs of responding
  to 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.

                              - 11 -



  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.  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


                              - 12 -



  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 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 $728,000 and
  $223,000 for the six and three months ended June 30, 2004,
  respectively, in comparison to $1,273,000 and $669,000 for the
  same periods of the prior year.

  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.






                              - 13 -



         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, has created a
strong backlog (unfilled orders on hand).  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 begin to improve until the latter
part of 2004 due to the existing high level of backlog.

Because of long lead times for certain 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.  Despite a higher
level of backlog which is primarily due to one large, low-margin
contract, the segment is also being impacted by a slow down in
demand from the construction industry and the resultant reduction
in margins following aggressive pricing by competitors as a reduced
level of potential business is pursued.  A significant increase in
the level of capital spending by the manufacturing sector is
necessary before earnings are likely to improve.

Operations for the Six and Three Months Ended June 30, 2004 and 2003

Net Sales.  Net sales for the six and three months ended June 30,
2004 were $100,432,000 and $53,646,000, respectively, compared to
$89,025,000 and $45,495,000 for the same periods of 2003.  A
discussion of year-to-date and second quarter sales for the
Corporation's two segments is included below.  Order backlogs
approximated $130,516,000 at June 30, 2004 in comparison to
$112,923,000 at December 31, 2003.  The increase is attributable to
improvements in backlog for each of the segments.

Costs of Products Sold.  Costs of products sold, excluding
depreciation, were 79.8% and 78.3% of net sales for the six months
ended June 30, 2004 and 2003, respectively, and 80.9% and 77.6% of
net sales for the three

                              - 14 -



months ended June 30, 2004 and 2003, respectively.  The increase is
due to product mix as well as higher raw material and natural gas
costs particularly for the Forged and Cast Rolls segment.

Selling and Administrative.  Selling and administrative expenses
for the six and three months ended June 30, 2004 are comparable to
that of the same periods of the prior year.  Volume-related
expenses such as commissions increased in connection with the
higher sales levels, however, were offset by lower legal costs for
case management and insurance recovery relating to lawsuits filed
in connection with asbestos-containing products manufactured
decades ago.

Income from Operations.  Income from operations for the six and
three months ended June 30, 2004 approximated $3,193,000 and
$1,571,000, respectively, in comparison to $2,197,000 and
$1,507,000 for the same periods of the prior year.  A discussion of
year-to-date and second quarter results for the Corporation's two
segments is included below.

Forged and Cast Rolls.  Sales for the six and three months ended
June 30, 2004 improved over the comparable prior year periods.  A
stronger demand by the steel industry contributed to the increase
in sales, including an improvement in the level of export sales
which have also been aided by more favorable foreign exchange
rates.  The benefit to operating income from the additional volume
was offset by higher natural gas, steel scrap and alloy costs.
Additionally, the quarter was negatively impacted by one-time
operational problems at the U.K. facility resulting in a loss for
the quarter against operating income for the prior year quarter.
Raw material surcharges have been added to the selling price of
incoming orders; however, the level of order backlog is such that
it will be towards year end before the escalation in costs will
begin to be recovered.  Backlog approximated $95,726,000 as of June
30, 2004 in comparison to $74,420,000 as of June 30, 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.  Sales and operating income improved for
the six and three months ended June 30, 2004 in comparison to the
same periods of the prior year due primarily to additional volume
for the pumps business, which benefited from an increase in
shipments of replacement parts.  While sales for the quarter for
the air handling company improved from higher order intake earlier
in the year, sales and operating income for each of the periods
improved only marginally because of competitive market constraints.
Results for the heat exchange coil operations remain inline with
the prior year periods.  Although this segment continues to be
adversely impacted by legal and case management costs associated
with personal injury claims and insurance recovery litigation
associated with asbestos-containing products and indemnity payments
not expected to be recovered from insurance carriers, these costs
decreased by approximately $462,000 and $399,000 for the six and
three months ended June 30, 2004 against the same periods of the
prior year.  Backlog approximated $34,790,000 as of June 30, 2004
in comparison to $26,609,000 as of June 30, 2003; the increase is
attributable to one large contract for air handling units.

Other Income (Expense).  Other income (expense) for the six and
three months ended June 30, 2004 approximated $268,000 and $86,000,
respectively, in comparison to other expense of $(401,000) and
$(155,000)


                              - 15 -



for the six and three months ended in 2003, respectively.  The
change is due primarily to gains on foreign exchange transactions
in 2004 versus losses on foreign exchange transactions in 2003.

Income Taxes.  The effective tax rate for continuing operations for
the six months ended June 30, 2004 approximated 40.8% and for the
three months ended June 30, 2004 approximated 49.3% in comparison
to 59.5% and 57.5% for the comparable prior year periods.  The 2003
effective rate includes establishing valuation allowances against
certain foreign net operating losses and foreign tax credits.

Discontinued Operations.  Loss 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 incurred pre-tax losses of approximately $(190,000) and
$(271,000) for the six and three months ended June 30, 2003 on
sales of $12,401,000 and $6,252,000 for the respective periods.

Net Income.  As a result of all of the above, the Corporation
earned net income for the six and three months ended June 30, 2004
of $2,048,000 and $840,000, respectively, in comparison to $588,000
and $391,000, respectively, for the six and three months ended June
30, 2003.

Liquidity and Capital Resources

Net cash flows provided by operating activities amounted to
$4,328,000 for the six months ended June 30, 2004 in comparison to
$3,208,000 for the six months ended June 30, 2003.

Net cash flows used in investing activities were $1,761,000 for the
six months ended June 30, 2004 and $2,635,000 for the six months
ended June 30, 2003.  Capital expenditures approximated $3,222,000
and $2,405,000, respectively, for the same periods then ended.  As
of June 30, 2004, future capital expenditures totaling $5,342,000
have been approved.  Funds on-hand, funds generated by future
operations, proceeds from U.K. government 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 $1,313,000 for the
six months ended June 30, 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
six months ended June 30, 2003 were $1,927,000 and related to the
payment of quarterly 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 $262,000 for the six months
ended June 30, 2004.

The Corporation maintains short-term lines of credit in excess of
the cash needs of its businesses.  The total available at June 30,
2004 was approximately $8,000,000 (including 2,100,000 GBP in the U.K.
and 400,000 Euros in Belgium).

                              - 16 -



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 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.





                              - 17 -




                    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 2-3 None

Item 4  Submission of Matters to a Vote of Security Holders

        On April 29, 2004 at the annual meeting of shareholders,
        the following individuals were elected directors of the
        Corporation by the following votes:

                                        For      Withheld

        Leonard M. Carroll           8,902,249    71,002
        Laurence E. Paul             8,757,927   215,324
        Ernest G. Siddons            8,781,379   191,872


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.

                 Attached hereto as Exhibit 3 is an amendment to
                 the by-laws adopted by the Board of Directors of
                 the Corporation as of June 1, 2004 amending
                 Article II, Section 8 and Article III, Sections 4
                 and 5.


                              - 18 -


        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.

            (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 April 21, 2004 announcing the Corporation's results
         for the three months ended March 31, 2004.

                              - 19 -




                            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:  August 5, 2004            BY:  s/Robert A. Paul
                                      Robert A. Paul
                                      Chairman and
                                        Chief Executive Officer




DATE:  August 5, 2004            BY:  s/Marliss D. Johnson
                                      Marliss D. Johnson
                                      Vice President
                                        Controller and Treasurer




















                              - 20 -



                   AMPCO-PITTSBURGH CORPORATION

                           EXHIBIT INDEX





Exhibit 3 -  Articles of Incorporation and By-laws

             Amendment to the by-laws adopted by the Board of
             Directors of the Corporation as of June 1, 2004


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
























                              - 21 -