Approval Details

Valid E.O.


This Executive Order approved the specified parts on on January 7, 2002.
As of Wednesday, September 18th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
LCH4853601999 - 2002 General Motors trucks equipped with either a 4.8, 5.3, or 6.0L engine.The Exhaust Headers are a short tube style header manufactured out of 16 gage mild steel tubing. The oxygen sensor is in the stock location. Connecting pipes manufactured out of 16 gage mild steel are included.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-479-4
  • Executive Order 479-4 / D479-4
  • ARB # D-479-4
  • Executive Order No: D-479-4
  • C.A.R.B. No. D-479-4
  • Resolution D-479-4
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-479-4 PDF

D-479-4 Document:

                                            State of California
                                        AIR RESOURCES BOARD

                                    EXECUTIVE ORDER D—479—4

                           Relating to Exemptions Under Section 27156
                                           of the Vehicle Code

                                         La Pole Custom Headers
                                             Exhaust Headers

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—45—9;

IT IS ORDERED AND RESOLVED: That the installation of the Exhaust Headers, manufactured
and marketed by La Pole Custom Headers, 1141 N. Cosby Way #B, Anaheim, California 92806
has been found not to reduce the effectiveness of the applicable vehicle pollution control
system and, therefore, is exempt from the prohibitions of Section 27156 of the Vehicle Code for .
the following General Motors truck applications. Vehicles that are emissions certified to
either the Ultra—Low Emissions Vehicle (ULEV) standards or the Super—UlItra—Low
Emissions Vehicle (SULEV}) standards are excluded from this Executive Order.

                    _ModeI—Year     |        Engine Displacement            Part No.
                     1985 to 2002*           4.3L                           LCH 4.3 V68
                     1999 to 2002            4.8, 5.3, or 6.0L              LCH—485360
                     1976 to 2000            5.0 or 5.7L                    LCH5S5057—1
                     1976 to 2002            7.4 or 81L                     LCH8454—1

* Excludes 2001 and 2002 model—year 4.3L Chevrolet: Astro Cargo 2WD/AWD, Passenger
 2WD;GMC Safari Cargo 2WD/AWD, Passenger 2WD.

The Exhaust Headers are a short tube style header manufactured out of 16 gage mild steel
tubing. The oxygen sensor is in the stock location. Connecting pipes manufactured out of
 16 gage mild steel are included.

 This Executive Order is valid provided that the installation instructions for the Exhaust Headers
 will not recommend tuning the vehicle to specifications different from those of the vehicle

 This Executive Order shall not apply to any La Pole Exhaust Header advertised, offered for
 sale, sold with, or installed on a motor vehicle prior to or concurrent with transfer to an ultimate

 Changes made to the design or operating conditions of the Exhaust Headers, as exempt by the
 Air Resources Board, which adversely affect the performance of the vehicle‘s pollution control
 system shall invalidate this Executive Order.

 Exemption of the Exhaust Headers shall not be construed as exemption to sell, offer for sale, or
 advertise any component of the kit as an individual device.


        This Executive Order does not constitute any opinion as to the effect the use of the Exhaust
        Headers may have on any warranty either expressed or implied by the vehicle manufacturer.

        This Executive Order is granted based on emissions test data generated on a 1994 General
        Motors 5.7L €1500 truck, certified to the tier 1 emission standards and a 1999 General Motors
        5.3L C1500 truck, certified to the low emission vehicle standards. Testing consisted of Cold
        Start CVS—75 Federal Test Procedures. Emission levels of the modified vehicles either met the
        applicable emission stangdards, or are within the allowable limits over the baseline as specified
        in the "Procedures for Exemption of Add—On and Modified Parts." The following test results are
        in grams per mile:

                              1999 C1500 5.3L

                          NMOG CO          NOx HCHO
        Standards         0160 4.4         0.4 0.018
        Device widfs      0113      116    0.2      0.002

                                 1994 C1500 5.7L

                          NMHC CO          NOx
        Baseline          0.29      4.3    1.3
        Device            0.28       4.0   1.3
        This Executive Order is also based on On—Board Diagnostic |I (OBD I!I) testing conducted on the
        same 1999 vehicle. Test data showed that the headers when installed on the vehicles did not
        affect the vehicle‘s ability to perform its OBD 11 monitoring.


        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.

        Executive Order D—479—3, dated October 2000, is superseded and of no further force and effect.

        Executed at El Monte, California, this      _ /'(day     January 2002.

                                                 Moblle Source Opera’uons Division

                       LA POLE CUSTOM HEADERS—EXHAUST HEADERS—D—479—4

Document Created: 2005-09-01 12:42:35
Document Modified: 2005-09-01 12:42:35

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