Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on June 8, 2007.
As of Wednesday, April 2nd, 2025 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:

CARB_D-167-31

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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