Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on August 16, 2005.
As of Wednesday, June 19th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

ModelsModification
1987 through 2005 model year Jeep vehicles equipped with a 4.0 liter engine, and 1976 through 1991 model year Jeep vehicles with 4.2 liter engine equipped with a Mopar Fuel Injection Conversion Kit (Executive Order D-265-21).The 4.0/4.2L Aluminum Cylinder Head is designed as a direct replacement with the following specifications: Intake valve diameter, 1.91 inches, exhaust valve diameter, 1.50 inches, and a combustion chamber volume of 57 cc. The stock rocker arms can be reinstalled without any modification.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-592
  • Executive Order 592 / D592
  • ARB # D-592
  • Executive Order No: D-592
  • C.A.R.B. No. D-592
  • Resolution D-592
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-592 PDF

D-592 Document:



                                       State of California
                                   AIR RESOURCES BOARD

                                   EXECUTIVE ORDER D—592

                          Relating to Exemptions Under Section 27156
                                     of the California Vehicle Code

                             Huriey Engine Services Company, Inc.
                   4.0/4.2L Aluminum Cylinder Head, Part Number HESACH

    Pursuant to the authority vested in the Air Resources Board by Section 27156 of the
    Vehicle Code; and

    Pursuant to the authority vested in the undersigned by Section 39515 and Section
    39516 of the Health and Safety Code and Executive Order G—02—003;

    IT IS ORDERED AND RESOLVED: That the installation of the 4.0/4.2L Aluminum
    Cylinder Head, part number HESACH, manufactured and marketed by Hurley Engine
    Services Company, Inc. (HESCO), 1200 2"" Avenue South, Birmingham, Alabama
    35233, has been found not to reduce the effectiveness of the applicable vehicle
    pollution control systems and, therefore, is exempt from the prohibitions of Section
    27156 of the Vehicle Code for 1987 through 2005 model year Jeep vehicles equipped
    with a 4.0 liter engine, and 1976 through 1991 model year Jeep vehicles with 4.2 liter
    engine equipped with a Mopar Fuel Injection Conversion Kit (Executive Order
    D—265—21).

    The 4.0/4.2L Aluminum Cylinder Head is designed as a direct replacement with the
    following specifications: Intake valve diameter, 1.91 inches, exhaust valve diameter,
    1.50 inches, and a combustion chamber volume of 57 cubic centimeters. The stock
    rocker arms can be reinstalled without any modification.

    This Executive Orderis valid provided that the installation instructions for the 4.0/4.2L
    Aluminum Cylinder Head will not recommend tuning the vehicle to specifications
    different from those submitted by the device manufacturer.

    Changes made to the design or operating conditions of the 4.0/4.2L Aluminum Cylinder
    Head, as exempt by the Air Resources Board, which adversely affect the performance
    of the vehicle‘s pollution control system shall invalidate this Executive Order.

    This Executive Order shall not apply to any 4.0/4.2L Aluminum Cylinder Head
    advertised, offered for sale, sold with, or installed on a new motor vehicle prior to or
    concurrent with transfer to an ultimate purchaser.

    Marketing of the 4.0/4.2L Aluminum Cylinder Head using any identification other than
    that shown in this Executive Order or marketing of the 4.0/4.2L Aluminum Cylinder
    Head for an application other than those listed in this Executive Order shall be
    prohibited unless prior approval is obtained from the Air Resources Board.



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This Executive Order does not constitute any opinion as to the effect the use of the
4.0/4.2L Aluminum Cylinder Head may have on any warranty either expressed or
implied by the vehicle manufacturer.

This Executive Order is granted based on an engineering evaluation, which determined
that the 4.0/4.2L Aluminum Cylinder Head would not have an adverse effect on
emissions for the vehicles listed in this Executive Order.

The Air Resources Board reserves the right in the future to review this Executive Order
and the exemption provided herein to assure that the exempted add—on or modified part
continues to meet the standards and procedures of Title 13, California Code of
Regulations, Section 2222, et seq.

THIS EXECUTIVE ORDER DOES NOT CONSTITUTE A CERTIFICATION,
ACCREDITATION, APPROVAL, OR ANY OTHER TYPE OF ENDORSEMENT BY THE
AIR RESOURCES BOARD OF ANY CLAIMS OF THE APPLICANT CONCERNING
ANTI—POLLUTION BENEFITS OR ANY ALLEGED BENEFITS OF THE 4.0/4.2L
ALUMINUM CYLINDER HEAD.

No claim of any kind, such as "Approved by the Air Resources Board", may be made
with respect to the action taken herein in any advertising or other oral or written
communication.

Violation of any of the above conditions shall be grounds for revocation of this order.
The order may be revoked only after a ten—day written notice of intention to revoke the
order, in which period the holder of the order may request in writing a hearing to contest
the proposed revocation. If a hearing is requested, it shall be held within ten days of
receipt of the request and the order may not be revoked until a determination is made
after the hearing that grounds for revocation exist.

Executed at El Monte, California, this     ____/3~~~_—   day of August 2005



                           . fowen——
                                Allen Lyons, Chief
                                Mobile Source Operations Division




                 HESCO —4.0/4.2L ALUMINUM CYLINDER HEAD — D—592



Document Created: 2005-11-18 11:19:28
Document Modified: 2005-11-18 11:19:28

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