Approval Details

Valid E.O.


This Executive Order approved the specified parts on on October 31, 1980.
As of Wednesday, February 28th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1980 and older vehicles with 14 mm non-tapered seat spark plugs

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-104
  • Executive Order 104 / D104
  • ARB # D-104
  • Executive Order No: D-104
  • C.A.R.B. No. D-104
  • Resolution D-104
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-104 PDF

D-104 Document:

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