Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on November 15, 2007.
As of Thursday, November 28th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsRemarks
THY-5112000 to 2004 Tacoma, 4Runner 2/4wd with 2.4 or 2.7L engineThe Summit Industries, Inc.ÔÇÖs Thorley Headers are a shorty style header that is manufactured out of 14 gage mild steel with either a chrome or ceramic finish. The oxygen sensor is retained in the stock location and at a collector. The headers may include a connecting Y-pipe that is also manufactured out of 14 gage mild steel.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-540-4
  • Executive Order 540-4 / D540-4
  • ARB # D-540-4
  • Executive Order No: D-540-4
  • C.A.R.B. No. D-540-4
  • Resolution D-540-4
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-540-4 PDF

D-540-4 Document:

CARB_D-540-4

State of California AIR RESOURCES BOARD EXECU1-IVE ORDER D-540-4 Relating to Exemptions Under Section 27156 of the Vehicle Code Summit Industries, Inc. Thorley 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 Sections 39515 and 39516 of the Health and Safety Code and Executive Order G-02-003; IT IS ORDERED AND RESOLVED: That the installation of the Thorley Headers, manufactured by Summit Industries, Inc. of 1200 West Railroad Street, Corona, California 92882, has been found not to reduce the effectiveness of the applicable vehicle pollution control system and, therefore, is exempt from the prohibitions of Section 271 56 of the Vehicle Code for the following vehicle applications: Part No. Application Engine Displacement 2000 to 2004 Tacoma, 4Runner 214wd 2.4L & 2.7L 2005 to 2008 Tacoma, 4Runner 214wd 2.7L 1995 to 2004 Tacoma, 4Runner, T100, Tundra, 214wd 3.4L 1995 to 2004 Tacoma, 4Runner, T I 00, Tundra, 214wd wIEGR 3.4L 2005 to 2008 Tacoma, 4Runner, FJ Cruiser 214wd 4.0L 2000 to 2004 Tundra 214wd 4.7L 2005 to 2006 Tundra 214wd 4.7L 2007 to 2008 Tundra 214wd 4.7L 2007 to 2008 Tundra 214wd 5.7L The Summit Industries, Inc.'s Thorley Headers are a shorty style header that is manufactured out of 14 gage mild steel with either a chrome or ceramic finish. The oxygen sensor is retained in the stock location and at a collector. The headers may include a connecting Y-pipe that is also manufactured out of 14 gage mild steel. This Executive Order is valid provided that installation instructions for this device will not recommend tuning the vehicles to specifications different from those of the vehicle manufacturer. This Executive Order shall not apply to any Summit Industries, Inc.'s Thorley Header advertised, offered for sale, sold with, or installed on a new motor vehicle prior to or concurrent with transfer to an ~~ltimate purchaser.

Changes made to the design or operating conditions of the device, as exerr~ptby the Air Resources Board, which adversely affect the performance of a vehicle's pollution control system shall invalidate this Executive Order. Marketing of this device using any identification other than that shown in this Executive Order or marketing of this device 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 opir~iolias to the effect the use of the device may have on any warranty either expressed or implied by the vehicle manufacturer. This Executive Order is granted based on submitted emission test data generated on a 2007 model year Toyota Tundra, engine test grol-lp 7TYXT05.7BEVI certified to the Low Emission Vehicle II Ultra Low Emission Vehicle (LEV II ULEV) emission standards. Test results on the Tundra showed that emission levels, with Summit Industries, Inc.'s Thorley Headers installed, met the applicable emission standards when tested using the Cold-Start CVS-75 Federal Test Procedure (FTP) and the Supplemental Federal Test Procedure (SFTP US06) test cycles. Examination of the OBD II system showed the Thorley Headers did not affect OBD II system operation. Results from emission testing conducted at Automotive Testing and Development Services, Inc., 400 South Etiwanda Avenue, Ontario, California 91761, are shown below, in grams per mile, with deterioration factors (df) applied. CVS-75 FTP NMOG CO NOx HCHO Standards 0.040 1.7 0.05 0.008 Device Test 0.040 0.4 0.02 0.000 Standards 4k Device 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 CLAIMS OF THE APPLICANT CONCERNING AN-I-I-POLLU-TION BENEFITS OR ANY ALLEGED BENEFITS OF SUNlNllT INDUSTRIES, INC.'S THORLEY 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 above conditions shall be grounds for revocation of this order. -The order may be revoked only after ten days written notice of intention to revoke the order, in which period the holder of the order may request in writing a hearing to co~itestthe proposed revocation. If a hearing is requested, it will 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 4day of November 2007. /5 V@ette Hebert, Chief Mobile Source Operations Division SUMMIT INDUSTRIES, INC. - THORLEY HEADERS - D-540-4


Document Created: 2007-11-19 16:15:24
Document Modified: 2007-11-19 16:15:24

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