Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 18, 1988.
As of Friday, March 1st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1987 and older model-year gasoline and diesel-powered vehicles.

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

D-174 Document:

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