EXECUTION



                             JOINDER AND RIGHTS AGREEMENT

          THIS JOINDER AND RIGHTS AGREEMENT (this "AGREEMENT") is made as of
October 14, 1999, by and between J.L. French Automotive Castings, Inc., a
Delaware corporation (the "COMPANY") and each of the Persons listed on the
signature page attached hereto (collectively referred to herein as the "ONEX
INVESTORS") and each individually as an "ONEX INVESTOR").

          As of April 21, 1999, the Company and certain of the Company's
stockholders entered into an investor stockholders agreement (as amended from
time to time in accordance with its terms, the "STOCKHOLDERS AGREEMENT") and a
registration rights agreement (as amended from time to time in accordance with
its terms, the "REGISTRATION AGREEMENT").

          On the date hereof, the Company, the Onex Investors and certain other
stockholders of the Company entered into a Stock Purchase Agreement (the
"STOCKPURCHASE AGREEMENT"), pursuant to which the Onex Investors purchased in
the aggregate 2,058.251020 shares of the Company's Class B Common Stock par
value $.01 per share (the "CLASS B COMMON") and such other stockholders have
approved an amendment to each of the Stockholders Agreement and the Registration
Agreement permitting the joinder of the Onex Investors to such agreements.

          In connection with the issuance of the Class B Common, the parties to
this Agreement desire that each Onex Investor become a party to the Stockholders
Agreement and the Registration Agreement.

          NOW, THEREFORE, the parties hereto agree as follows:

          1.   ADDITION OF THE ONEX INVESTORS TO THE STOCKHOLDERS AGREEMENT.
The parties hereto agree that, by and upon execution of this Agreement, each
Onex Investor shall be a party to the Stockholders Agreement and shall be
considered a "STOCKHOLDER" and a holder of "COMMON STOCK" thereunder and, except
as otherwise provided herein, each shall be entitled to the rights and benefits
and subject to the duties and obligations of a Stockholder and a holder of
Common Stock thereunder, as fully as if such Onex Investor were an original
signatory thereto in such capacities.

          2.   ADDITION OF THE ONEX INVESTORS TO THE REGISTRATION AGREEMENT.
The parties hereto agree that, by and upon execution of this Agreement, each
Onex Investor shall be a party to the Registration Agreement and shall be
considered an "INVESTOR" and a holder of "REGISTRABLE SECURITIES" thereunder and
shall be entitled to the rights and benefits and subject to the duties and
obligations of an Investor and a holder of Registrable Securities thereunder, as
fully as if such Onex Investor were an original signatory thereto in such
capacities.




          3.   RESTRICTIVE LEGENDS.  In lieu of the legend required by Article 7
of the Stockholders Agreement, each certificate evidencing shares of Class B
Common acquired upon conversion of the Convertible Note (or any Company
securities issued with respect to such shares) shall, until such time as such
shares are no longer subject to the provisions of the Stockholders Agreement in
accordance with the provisions thereof, be stamped or otherwise imprinted with a
legend in substantially the following form:

     "THE SECURITIES REPRESENTED BY THIS CERTIFICATE WERE ORIGINALLY ISSUED
     ON OCTOBER 14, 1999, AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
     ACT OF 1933, AS AMENDED (THE "ACT"), OR THE SECURITIES LAWS OF ANY
     STATE, AND MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE OF AN
     EFFECTIVE REGISTRATION UNDER THE ACT OR APPLICABLE STATE LAW OR AN
     EXEMPTION FROM REGISTRATION THEREUNDER.  THE SECURITIES REPRESENTED BY
     THIS CERTIFICATE ARE ALSO SUBJECT TO ADDITIONAL RESTRICTIONS ON
     TRANSFER AND CERTAIN OTHER AGREEMENTS SET FORTH IN A STOCKHOLDERS
     AGREEMENT DATED AS OF APRIL 21, 1999, BY AND AMONG THE ISSUER OF SUCH
     SECURITIES (THE "COMPANY") AND CERTAIN OF THE COMPANY'S STOCKHOLDERS,
     AS AMENDED AND MODIFIED FROM TIME TO TIME.  THE SECURITIES REPRESENTED
     BY THIS CERTIFICATE BECAME SUBJECT TO SUCH STOCKHOLDERS AGREEMENT
     PURSUANT TO A JOINDER AND RIGHTS AGREEMENT DATED AS OF OCTOBER 14,
     1999, BY AND AMONG THE COMPANY AND THE INITIAL HOLDER OF SUCH
     SECURITIES.  A COPY OF EACH SUCH AGREEMENT SHALL BE FURNISHED WITHOUT
     CHARGE BY THE COMPANY TO THE HOLDER HEREOF UPON WRITTEN REQUEST."

          4.   CONTINUING EFFECT.  Except as modified by this Agreement, the
Stockholders Agreement shall continue and remain in full force and effect in
accordance with their terms.

          5.   SEVERABILITY.  Whenever possible, each provision of this
Agreement shall be interpreted in such manner as to be effective and valid under
applicable law, but if any provision of this Agreement is held to be invalid,
illegal or unenforceable in any respect under any applicable law or rule in any
jurisdiction, such invalidity, illegality or unenforceability shall not affect
the validity, legality or enforceability of any other provision of this
Agreement in such jurisdiction or affect the validity, legality or
enforceability of any provision in any other jurisdiction, but this Agreement
shall be reformed, construed and enforced in such jurisdiction as if such
invalid, illegal or unenforceable provision had never been contained herein.

          6.   CONSENT TO AMENDMENTS.  The provisions of this Agreement may be
amended, modified, or waived only with the prior written consent of the Company
and holders of a majority of the Class A Common held by the Onex Investors;
PROVIDED that no such amendment, modification, waiver shall in any way be
construed to constitute an amendment, modification, or


                                          2


waiver of the Stockholders Agreement (including without limitation with respect
to the Onex Investors' being a party to such agreements and the rights and
obligations of the Onex Investors as a party to such agreement), which agreement
may only be amended, modified, or waived in accordance with the provisions
thereof.

          7.   COUNTERPARTS.  This Agreement may be executed in multiple
counterparts, each of which shall be an original and all of which taken together
shall constitute one and the same agreement.

          8.   GOVERNING LAW.  THE CORPORATE LAW OF THE STATE OF DELAWARE SHALL
GOVERN ALL ISSUES AND QUESTIONS CONCERNING THE RELATIVE RIGHTS OF THE COMPANY
AND ITS STOCKHOLDERS.  ALL OTHER ISSUES AND QUESTIONS CONCERNING THE
CONSTRUCTION, VALIDITY, INTERPRETATION AND ENFORCEABILITY OF THIS AGREEMENT
SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF
NEW YORK, WITHOUT GIVING EFFECT TO ANY CHOICE OF LAW OR CONFLICT OF LAW RULES OR
PROVISIONS (WHETHER OF THE STATE OF NEW YORK OR ANY OTHER JURISDICTION) THAT
WOULD CAUSE THE APPLICATION OF THE LAWS OF ANY JURISDICTION OTHER THAN THE STATE
OF NEW YORK.

          9.   SUCCESSORS AND ASSIGNS.  Except as otherwise provided herein,
this Agreement shall bind and inure to the benefit of and be enforceable by the
Company and Tower and their respective successors and assigns, whether so
expressed or not.

          10.  DESCRIPTIVE HEADINGS; INTERPRETATION; NO STRICT CONSTRUCTION.
The descriptive headings of this Agreement are inserted for convenience only and
do not constitute a substantive part of this Agreement.  Whenever required by
the context, any pronoun used in this Agreement shall include the corresponding
masculine, feminine or neuter forms, and the singular forms of nouns, pronouns,
and verbs shall include the plural and vice versa.  Except as otherwise
expressly provided herein, reference to any agreement, document, or instrument
means such agreement, document, or instrument as amended or otherwise modified
from time to time in accordance with the terms thereof, and if applicable
hereof.  The use of the words "include" or "including" in this Agreement shall
be by way of example rather than by limitation.  The use of the words "or,"
"either" or "any" shall not be exclusive.  The parties hereto have participated
jointly in the negotiation and drafting of this Agreement.  In the event an
ambiguity or question of intent or interpretation arises, this Agreement shall
be construed as if drafted jointly by the parties hereto, and no presumption or
burden of proof shall arise favoring or disfavoring any party by virtue of the
authorship of any of the provisions of this Agreement.

          11.  DELIVERY BY FACSIMILE.  This Agreement, the agreements referred
to herein, and each other agreement or instrument entered into in connection
herewith or therewith or contemplated hereby or thereby, and any amendments
hereto or thereto, to the extent signed and delivered by means of a facsimile
machine, shall be treated in all manner and respects as an original agreement or
instrument and shall be considered to have the same binding legal effect as if
it were the original signed version thereof delivered in person.  At the request
of any party hereto or to any such agreement or instrument, each other party
hereto or thereto shall reexecute original forms


                                          3


thereof and deliver them to all other parties.  No party hereto or to any such
agreement or instrument shall raise the use of a facsimile machine to deliver a
signature or the fact that any signature or agreement or instrument was
transmitted or communicated through the use of a facsimile machine as a defense
to the formation or enforceability of a contract and each such party forever
waives any such defense.


                          *       *       *       *       *















                                          4


          IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of  the date first written above.


                                   J.L. FRENCH AUTOMOTIVE CASTINGS, INC.


                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   Onex Advisor LLC

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1170809 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1170810 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1170812 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1170698 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------




                                   Kaban Investments

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   ------------------------------------------
                                   Mark Briggs


                                   ------------------------------------------
                                   Naveen Jeereddi



                                   1299039 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   ------------------------------------------
                                   Robert Lantos


                                   ------------------------------------------
                                   Brian King


                                   ------------------------------------------
                                   Robert Prichard


                                   ------------------------------------------
                                   Serge Gouin


                                   Mercury Trade International Ltd.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------



                                   United Trustco Limited

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   Medavoy 1987 Trust dated January 25, 1999

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1376654 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1376653 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   HRON Canadian Investments Ltd.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   Brent Belzberg Family Trust

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   ------------------------------------------
                                   Brian Mulroney


                                   ------------------------------------------
                                   Don Gales




                                   ------------------------------------------
                                   Arnold Messer


                                   2668921 Manitoba Ltd.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1170821 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   SMM (Kyzalea)

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------



                                   1170697 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1170819 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1301449 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------



                                   1352536 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------


                                   1352537 Ontario Inc.

                                   By:
                                        ---------------------------------
                                   Its:
                                        ---------------------------------