Approval Details

Valid E.O.


This Executive Order approved the specified parts on on June 24, 1992.
As of Sunday, May 19th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1992 and older diesel powered vehicles with 6 inch or 8 inch air intake diameter for AV1 1992 and older diesel powered vehicle with 3 inch to 24 inch air intake diameter for AV2.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-258
  • Executive Order 258 / D258
  • ARB # D-258
  • Executive Order No: D-258
  • C.A.R.B. No. D-258
  • Resolution D-258
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-258 PDF

D-258 Document:

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