Approval Details

Valid E.O.


This Executive Order approved the specified parts on on February 23, 1999.
As of Wednesday, October 16th, 2019 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
P45294161986-1991 Jeep 4.0L 6cyl

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-401-3
  • Executive Order 401-3 / D401-3
  • ARB # D-401-3
  • Executive Order No: D-401-3
  • C.A.R.B. No. D-401-3
  • Resolution D-401-3
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-401-3 PDF

D-401-3 Document:

                                                                                  (Page 1 of 2)

                                                  State of California
                                              AIR RESOURCES BOARD

                                            EXECUTIVE ORDER D—401—3
                                      Relating to Exemptions Under Section 27156
                                                   of the Vehicle Code

                                              MIKE LEACH COMPANY
                                                 EXHAUST 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—45—9;

IT IS ORDERED AND RESOLVED: That the installation of the Exhaust Headers manufactured by the Mike Leach
Company of 1443 W. Collins, P.O. Box 3725, Orange, California 92667 has been found not to reduce the
effectiveness of the applicable vehicle pollution control system and, therefore, is exempt from the prohibitions of
Section 27156 of the Vehicle Code for the following Chrysler trucks listedin Exhibit A, which is attached hereto and
incorporated herein.

Mike Leach‘s Exhaust Headers are manufactured out of 14 gage mild steel. The oxygen sensor is located either in the
header‘s collector pipe or remains at the stock location in front of the catalyst. The truck headers are a long tube style
headers which may require the use of a 14 gage mild steel Y pipe for installation, the Neon headers are a shorty design
that uses the stock connecting pipes.

This Executive Order is valid provided that installation instructions for the Exhaust Headers will not recommend
tuning the vehicle to specifications different from those of the vehicle manufacturer.

This Executive Order shall not apply to any Mike Leach Exhaust Headers advertised, offered for sale, or sold with or
installed on, a motor vehicle prior to or concurrent with transfer to an ultimate purchaser

Changes made to the design or operating conditions of the Exhaust Headers, as exempt by the Air Resources Board,
which adversely affect the performance of a vehicle‘s pollution control system shall invalidate this Executive Order.

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 submitted emissions test data on a 1998 Ram 1500 truck and a 1999 Dodge
Neon. Both test vehicles are certified to a low emission vehicle standard. Testing consisted of one Cold Start CVS—75
Federal Test Procedures in the modified configuration. Emissions test data showed that the vehicles in the modified
configuration met their applicable emission standards. The following test results are in grams per mile with
deterioration factors applied:
                                1998 Ram

                      NMOG      CO      NOX       HCHO
Standard              0.16      4.4     0.4       0.018
Device                0.12      2.2     0.2       0.003

                                1999 Neon

                     NMOG       CO      NOX       HCHO
Standard           —_0.075      3.4     0.2       0.015
Device               0.070      0.6     0.1       0.001

MIKE LEACH COMPANY                 |      C                         EXECUTIVE ORDER D—401—3
EXHAUST HEADERS                                                     (Page 2 of 2)

This Executive Order is also based on On Board Diagnostic II (OBD II) testing conducted on the same vehicles. Test
data showed that the headers when installed on the vehicles did not affect the vehicle‘s ability to perform its OBD II


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 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 after hearing that grounds for revocation

Executive Order D—401—2, dated October 1998, is superseded and of no further force and effect.

Executed at El Monte, California, this 22 day of February

                                          $ Summerfield    Chief
                                        Mobile Source Operations    Division


~~34529416    86—91 4.0L 6 JEEP
~ P4876251    97 DAKOTA V—8 4WD/AUTO
  P4876252    97DAKOTA V—8 2WD/MANUAL
  P4876258    97 DAKOTA V—8 2WD/AUTO
  PA876259    96—99 V—8 B—VAN
  P4876260    97—99 JEEP WRANGLER TJ 4.0L 6CYL
  P4876566    97 DAKOTA V—8 4WD/MANUAL
  P4876680    94—95 V—8 RAM 2WD 5 SPEED
  P4876681    94—95 V—8 RAM 4WD 5 SPEED
  P4876682    96—99 V—8 RAM 4WD 5 SPEED
  PA876773    98/99 GRAND CHEROKEE 5.9L V8
  P4876815    98/99 DURANGO
  P4876901    98/99 DAKOTA 360
  P4876918    86—91 4.0L JEEP
  P5007091    98/99 2WD DURANGO
  P5249531    93—95 V—8 GRAND CHEROKEE
  P5249763    94/95 V—10 RAM 2WD & 4WD
  PS5249960   96 DAKOTA 2WD/AUTO V—8
  P5249961    96 DAKOTA 2WD/MANUAL V—8
  P5249962    96 DAKOTA 4WD V—8
  P5249963    96—99 RAM 2WD/AUTO V—8
  P5249964    96—99 RAM 2WD / MANUAL V—8
*15249965     96—99 RAM 4WD/AUTO V—8
  P5249966    96—99 RAM V—10 CALIFORNIA ONLY
  P5249967    96—99 RAM V—10 FEDERAL
  P5249968    96 DAKOTA 2WD 4 CYL
  P5249969    96 DAKOTA 2WD V—6
  P5249970    96—98 GRAND CHEORKEE 5.2/5.9L V—8
  P5249971    96—99 JEEP CHEROKEE 6 CYL
  P5249972    95—99 JEEP WRANGLER YJ 6 CYL
  P5249856    95—99 NEON SOHC
  P5249973]   95—99 NEON DOHC

                                          Exhibit A CONT.

   529416   86—91 4.0L 6 JEEP
  4876251   97 DAKOTA V—8 4WD/AUTO
  4876252   97DAKOTA V—8 2WD/MANUAL
  4876258   97 DAKOTA V—8 2WD/AUTO
  4876259   96—99 V—8 B—VAN
  4876260   97—99 JEEP WRANGLER TJ 4.0L 6CYL
  4876566   97 DAKOTA V—8 4WD/MANUAL
  4876680   94—95 V—8 RAM 2WD 5 SPEED
  4876681   94—95 V—8 RAM 4WD 5 SPEED
  4876682   96—99 V—8 RAM 4WD 5 SPEED
  4876773   98/99 GRAND CHEROKEE 5.91 V8
  4876815   98/99 DURANGO
  4876901   98/99 DAKOTA 360
 4876918    86—91 4.0L JEEP
 5007091    98/99 2WD DURANGO
 5249531    93—95 V—8 GRAND CHEROKEE
  5249763   94/95 V—10 RAM 2WD & 4WD
  5249960   96 DAKOTA 2WD/AUTO V—8
  5249961   96 DAKOTA 2WD/MANUAL V—8
  5249962   96 DAKOTA 4WD V—8
  5249963   96—99 RAM 2WD/AUTO V—8
__5249964   96—99 RAM 2WD / MANUAL V—8
   249965   96—99 RAM 4WD/AUTO V—8
  5249966   96—99 RAM V—10 CALIFORNIA ONLY
  5249967   96—99 RAM V—10 FEDERAL
  5249968   96 DAKOTA 2WD 4 CYL
  5249969   96 DAKOTA 2WD V—6
  5249970   96—98 GRAND CHEORKEE 5.2/5.9L V—8
  5249971   96—99 JEEP CHEROKEE 6 CYL
  5249972   95—99 JEEP WRANGLER YJ 6 CYL
  5249856   95—99 NEON SOHC
  5249973   95—99 NEON DOHC

Document Created: 2005-09-01 12:41:47
Document Modified: 2005-09-01 12:41:47

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