Approval Details

Valid E.O.


This Executive Order approved the specified parts on on March 10, 1998.
As of Tuesday, May 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Ford 4.6/5.4 liter applications excluding any vehicle certified to a transitional low emission vehicle (TLEV) or low emission vehicle (LEV) emission standard: 1994/95 Crown Victoria, Grand Marquis, Town Car, 1994-97 Thunderbird/Cougar, 1996-98 2-valve Mustang, and 1997/98 trucks.The EGR valve is relocated between the throttle body and the supercharger intake. Stock air cleaner is maintained.Eaton supercharger with a 2.85" diameter pulley (passenger cars) or 2.94" diameter pulley (trucks), intake manifold plenum, intake manifold runners, intercooler, throttle body adapter, electric water pump, high flow fuel pump, and fuel pressure regulator.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-423-1
  • Executive Order 423-1 / D423-1
  • ARB # D-423-1
  • Executive Order No: D-423-1
  • C.A.R.B. No. D-423-1
  • Resolution D-423-1
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-423-1 PDF

D-423-1 Document:

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