Approval Details

Valid E.O.


This Executive Order approved the specified parts on on March 25, 1999.
As of Thursday, September 28th, 2023 this Executive Order has not been overturned or superceeded.

Approved Parts

1995 and older vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-478
  • Executive Order 478 / D478
  • ARB # D-478
  • Executive Order No: D-478
  • C.A.R.B. No. D-478
  • Resolution D-478
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-478 PDF

D-478 Document:

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