Approval Details

Valid E.O.


This Executive Order approved the specified parts on on September 19, 1990.
As of Tuesday, July 23rd, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1991 and earlier model-year vehicles powered with gasoline or diesel internal combustion engines

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-174-1
  • Executive Order 174-1 / D174-1
  • ARB # D-174-1
  • Executive Order No: D-174-1
  • C.A.R.B. No. D-174-1
  • Resolution D-174-1
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-174-1 PDF

D-174-1 Document:

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