Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on October 18, 2011.
As of Thursday, January 17th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsRemarks
See PDF2006 and older GM V8 and V6 vehiclesThe Exhaust Headers are manufactured out of 14 gage mild steel or stainless steel tubing, and are a shorty design except for 1995 and older vehicle applications which may include long tube headers. On applicable vehicles, the oxygen sensor is in the stock location at the collector and the stock connecting pipe is retained.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-167-33
  • Executive Order 167-33 / D167-33
  • ARB # D-167-33
  • Executive Order No: D-167-33
  • C.A.R.B. No. D-167-33
  • Resolution D-167-33
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-167-33 PDF

D-167-33 Document:



                                    State of California
                                AIR RESOURCES BOARD .

                              EXECUTIVE ORDER D—167—33

                       Relating to Exemptions Under Section 27156
                                  of the California Vehicle Code

                                     Hedman Hedders
                                     Exhaust Headers

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

Puréuant 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;                         .

T IS:ORDERED AND RESOLVED: That the installation of the Exhaust Headers,
manufactured and marketed by 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 vehicle applications
listed in Exhibit A.

The Exhaust Headers are manufactured out of 14 gage mild steel or stainless steel
tubing, and are a shorty design except for 1995 and older vehicle applications which may
include long tube headers. On applicable vehicles, the oxygen sensor is in the stock
location at the collector and the stock connecting pipe is retained.

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
submitted by the device manufacturer.

Changes made to the design or operating conditionsof 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.

This Executive Order shall not apply to any Exhaust Headers 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 Exhaust Headers using any identification other than that shown in this
Executive Order or marketing of the Exhaust Headers 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
Exhaust Headers may have on any warranty either expressed or implied by the vehicle
manufacturer.                .

This Executive Order is granted based on previously submitted emissions and OBD II
test data that was generated in support of prior Executive Orders.


                                            «9.


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 EXHAUST
HEADERS.

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 aboveconditions 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    ZE        day of October 2011.




                                /‘ Anneite Hebert, Chief
                                     Mobile Source Operations Division




                HEDMAN HEDDERS — EXHAUST HEADERS — D—167—33


                                                                               ExhibitA
                                                                               D—167—33


                                                                                                                             Coated
      CHEVROLET                                                                                     283—400                  66311
                                                                                                    283—400                  66317
                      PONTIAG




                                                                                                    283—400
      CHEVROLET
                      PONTIAG                                                                       $96—502

                                                                                                    $96—502



                                                                                                    5
                      PONTIAG                                                                       5.7L      (LT

                      PONTIAC                                                                       283—400
                                                                                                    5.0L

                                                                                                    283—400



                                                                                          84—86     283—400
CHEVROLET                       CORVETTE                                                  87—91     283—400
BU    CH                                                                                  2001—02   5.7L
CHEVROLET, GMC & CADILLAG                and 1 TON—PICKUPS and SUVs                         —87     283—400
CHEVROLET, GMC &                    3/4, and 1                                            67—87     283—400
                                    3/4                    and
                  &                                                                                 398—502         —
                                    /4                                                                              —1 T
               &                              1            PS   and
CHEVROLET, GMC &                     3/4, and 1 TON             and                                 7.4L (1 Ton ONL
               &                     374                        and SUVs                            5.0, 5.7L
CHEVROLET, GMC & CADILLAC            3/4, and 1 TON                                                 5.0, 5.7L (1/2—3/4 Ton
           GMC & CADILLACG                    1     PICKUPS     and SUVs
                                     374                            SUVs                            7.AL (1 Ton ONL
                                              1                                                     5
                                     3/4                                                            5.71 Vortec
                                                TON
                                     3/4                                                            4.8,   5.3, 6.0L W/EGR
                                                TON PICKUPS     and SUVs
CHEVROLET                            3/4, and 1 TON                                                 4.8         6.0L
                                     374                            SUVs                            8.1L         =1—T
                                         & BLAZER (1/2 ton       Full Size
CHEVROLET                       $—10, S—1                                                           4.31 v6
                                1                                                                   5.0

                                     & 3/4                                                          283—400
                                112 &
                                12 &                  ONLY       (1500—
            GMC                      & 3/4 TON PICKUP ONLY       (1
CHEVROLET                       1/2 & 314      PICKUP     Y      (1500—                             $96—454      Ton
                                1 2,  314                            SUVs                             AL (1 Ton ONL
            GMC, CADILLAC                    1     PICKUPS      and SUVs                            7 AL      —1 T
CHEVROLET                            TORKHOMES         "A"

                                MINI                        "C" converted V
                                                            "C" converted V.


Thé following General Motors engine test grou
are excludedi   : 2006 model    r, 6GMXTO4.8372
and 6GMXTO6.0389, and 2004 model                     ear, 4GMXTO5.3170.



Document Created: 2011-11-28 16:00:45
Document Modified: 2011-11-28 16:00:45

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