Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 8, 2007.
As of Sunday, August 18th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Models
See PDF

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-167-31
  • Executive Order 167-31 / D167-31
  • ARB # D-167-31
  • Executive Order No: D-167-31
  • C.A.R.B. No. D-167-31
  • Resolution D-167-31
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-167-31 PDF

D-167-31 Document:



                                     State of California
                                AIR RESOURCES BOARD

                              EXECUTIVE ORDER D—167—31

                       Relating to Exemptions Under Section 27156
                                  of the California Vehicle Code

                                     Hedman Hedders
                            Tubular Exhaust Manifold Systems

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 Tubular Exhaust Manifold
Systems, manufactured and marketed by the Hedman Hedders, 12438 Putnam Street
Whittier, California 90602, 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 the following General Motors
Corporation vehicles with a 4.8, 5.3, or 6.0L V8 engine, excluding vehicles from the
following test groups: 2006 model year, 6GMXTO04.8372 and 6GMXTO06.0389, and 2004
model year, 4GMXTO5.3170.

Part No.         Model Year       Application
69690*, 69696*   1999 to 2006    1500/2500/3500 Series Trucks and SUVs, Hummer H2
69680, 69686     1999 to 2004    Trucks and SUVs (with EGR)
69681, 66681     1999 to 2004    Trucks and SUVs (with EGR and air injection)

* With or without EGR

The Tubular Exhaust Manifold Systems is a short tube design header manufactured out
of 14 gage mild steel tubing with an optional metallic coating. The headers retain the
stock cornnecting pipes and installation does not require any changes to the oxygen
sensor, which is located in the stock connecting pipes.

This Executive Order is valid provided that the installation instructions for the Tubular
Exhaust Manifold Systems 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 Tubular Exhaust Manifold
Systems, 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 Tubular Exhaust Manifold Systems
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 Tubular Exhaust Manifold Systems using any identification other than
 that shown in this Executive Order or marketing of the Tubular Exhaust Manifold
 Systems for an application other than those listed in this Executive Order shall be
 prohibited unless prior approval is obtained from the Air Resources Board.

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

 This Executive Order is granted based on a prior evaluation which determined that
 Hedman Hedders‘ Tubular Exhaust Manifold Systems does not cause an adverse effect
 on emissions of selected General Motors trucks (D—167—30) or affect the vehicles‘ ability
 to perform On—Board Diagnostic II (OBD II) system monitoring. The same effect on
 emissions and OBD II system monitoring is expected from use of the Tubular Exhaust
 Manifold Systems on the vehicles listed in this Executive Order.

 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 TUBULAR
 EXHAUST MANIFOLD SYSTEMS.

 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        Q’fl} day of June 2007.



                                91 %&Ww—-
                                     @Amnette Hebert, Chief
                                 .      Mobile Source Operations Division




     HEDMAN HEDDERS — TUBULAR EXHAUST MANIFOLD SYSTEMS — D—167—31



Document Created: 2007-08-02 10:20:39
Document Modified: 2007-08-02 10:20:39

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