Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 21, 1992.
As of Friday, May 24th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1992 and earlier gasoline and diesel powered vehicles

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-251
  • Executive Order 251 / D251
  • ARB # D-251
  • Executive Order No: D-251
  • C.A.R.B. No. D-251
  • Resolution D-251
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-251 PDF

D-251 Document:

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