Approval Details

Valid E.O.


This Executive Order approved the specified parts on on November 29, 1976.
As of Monday, April 15th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1977 and older vehicles EXCEPT with 1) Chrysler's Electronic Lean Burn System 2) Volvo's Three-Way Catalyst 3) Bosch Jetronic Fuel Injection Systems.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-9-4
  • Executive Order 9-4 / D9-4
  • ARB # D-9-4
  • Executive Order No: D-9-4
  • C.A.R.B. No. D-9-4
  • Resolution D-9-4
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-9-4 PDF

D-9-4 Document:

Current View

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