Approval Details

Valid E.O.


This Executive Order approved the specified parts on on August 7, 1991.
As of Monday, October 21st, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
315Y1975-1981 light-duty/ medium-duty Chevrolet van and mini-motorhome equipped with a open-loop 283-400 CID engine

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-200-4
  • Executive Order 200-4 / D200-4
  • ARB # D-200-4
  • Executive Order No: D-200-4
  • C.A.R.B. No. D-200-4
  • Resolution D-200-4
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-200-4 PDF

D-200-4 Document:

                                                     (Page 1 of ?)

                              State of Californisa
                              AIR RESOURCES BOARD

                          EXE&UTI?E ORDER D—200—4
                   Relating to Exemptions Under Section 27156
                              af the Veh\cta Cede

                           Dous THORLEY HEADERS, mNc.
                                 EXHAUST HEADER —
                                   (P/N 315Y)
k }Pursuant to the autharxty vested in the Air Resources Board by Section 27156
    f the Vehlc}e Code; and

   ursuant to the AJthor;ty vested in the unders1gned by Sections 39515 and
   Sslfi_af the Health and Safety Code ard Executlve Order 6— 45 5;

   T IS ORDERED AND RESOLVED That the 1nsta1%atlon of the Doug Thorley
   xhaust‘headerpart ho. 315Y manufactured by Doug Thorley Headers, Inc. of
    61‘ Commerce. Street, Corona, CA 91720, has been found not to reduce the
   ffectiveness of the applicable vehicle pollution control system and,
   herefore, is exempt from the prohxbitlans of Section 27156 of the VehICTe
   ode" for1975— 1981 made] year light——~—duty/medium—duty Chevrolet vans and
          tor homes equxpped with a open—loop 283—400 CID engine.    ~
      _B ecutzve Drdpr is valid provided that installation xnstructxons for
  this exhaust header will not recommend tuning the vehicle to specifications
  dlfferent}from those submxtted by Doug Thorley Headers, Inc.

 # Changes‘made to thedesign or operating conditions of the exhaust header, as
 : exempt by the Air Resources Board, which adversely affect the performance of
 ;ma vehxc]e 5 pol]utaon control system sha13 1nva?1date thls Executive Order.

 ,:Marketxng of this exhaust header using any ijdentification other than that
 _ shown in this Executive Order or marketwng of this exhaust header for an
 ‘— applicatfon other than those Tisted in this Executive Order shall be
 ~prohibited unless prior approval is obtained from the Air Resources Board.
  \Exremption of this exhaust header shall not be construed as exemption to
  sell. offer for sale, or advertise any camponent of the kit as an individual

   Thzs Executive Order does not constitute any opinion as to the effect the
   use of this exhaust header may have on any warranty sither expressed or
   implied by the vehicle manufacturer.

                                                                                  oo tmmm

mcam. HEADERS, INC.                     |   EXE£UTIVE ORDER D—200—4
         TN                                 (Page 2 of 2)

                  s”requ”'ted,vitzshall bé.heldwithin ten days of
                      he"o   *may not> be revoked until a    C


                               "t. / Summerfield / —
                                ~Ass stantD1v1sion h}ef
                                 Mobiie Source D!VtSlon

Document Created: 2005-09-01 12:40:22
Document Modified: 2005-09-01 12:40:22

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