Approval Details

Valid E.O.


This Executive Order approved the specified parts on on October 30, 2000.
As of Monday, September 16th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
LCH4853601999 - 2001 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-479-3
  • Executive Order 479-3 / D479-3
  • ARB # D-479-3
  • Executive Order No: D-479-3
  • C.A.R.B. No. D-479-3
  • Resolution D-479-3
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-479-3 PDF

D-479-3 Document:

                                                                        (Page 1 of 2)

                                      State of California
                                  AIR RESOURCES BOARD

                               EXECUTIVE ORDER D—479—3
                        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.

                   Model—Year            Engine Displacement            Part No.
                   1999 to 2001          4.8, 5.3, or 6.0L              LCH—485360
                   1976 to 2000          5.0 or 5.7L                    LCH 5057—1
                   1976 to 2001          7.4 or 8. 11L                  LCH 8454—1

The Exhaust Headers are a short tube style header manufactured out of 16 gage mild steel!
tubing. The oxygen sensor is in the steck 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 manufacturer.

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 purchaser.

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 doés 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.

LA POLE CUSTOM HEADERS                                         Executive Order D—479—3
Exhaust Headers                                         .      (Page 2 of 2)

This Executive Order is granted based on emissions test data generated on a 1994 General
Motors 5.7L C1500 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 standards, 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         0.160 4.4          0.4   0.018
Device w/dfs      0.113 116          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 If (OBD II) 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 II 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 fen—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—4792, dated April 2000,issuperseded and of no further force and effect.

Executed at El Monte California, this ,3 day of October 2000.

                          ~             @ merfield, Chigéf
                                        Mobile Source Operations Division

Document Created: 2005-09-01 12:42:16
Document Modified: 2005-09-01 12:42:16

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