Approval Details

Valid E.O.


This Executive Order approved the specified parts on on July 2, 2002.
As of Sunday, July 14th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModificationRemarks
WIK-LR4-4.8LA1999-2002 GENERAL MOTORS TRUCKS 4.8L, Pulley Supercharger 3.995", Pulley Crankshaft 7.50", Compressor Size 2.1LThe WhippleCharger is a supercharger consisting of the following main components: Twin Screw Whipple supercharger, two auxiliary fuel injectors (one injector on the PT-Cruiser) with a stand alone computer, air bypass valve, a low temperature thermostat to replace stock thermostat, and a new air cleaner element for use in the stock air cleaner housing. Intercooler is included on selected kits and denoted as IC in the part number. The maximum boost is 8 psi. on the Ford and General Motors vehicles and 9.2 psi. on the Chrysler PT-Cruisers.Excluding any Ford or General Motors vehicle certified to the Ultra Low Emission Vehicle (ULEV) emission standards

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-231-19
  • Executive Order 231-19 / D231-19
  • ARB # D-231-19
  • Executive Order No: D-231-19
  • C.A.R.B. No. D-231-19
  • Resolution D-231-19
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-231-19 PDF

D-231-19 Document:

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