Approval Details

Valid E.O.


This Executive Order approved the specified parts on on August 14, 1997.
As of Sunday, June 16th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1997 and older model year vehicles powered by a diesel engine utilizing liquid coolant

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-437
  • Executive Order 437 / D437
  • ARB # D-437
  • Executive Order No: D-437
  • C.A.R.B. No. D-437
  • Resolution D-437
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-437 PDF

D-437 Document:

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