Approval Details

Valid E.O.


This Executive Order approved the specified parts on on May 10, 1999.
As of Sunday, July 14th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
ES3700 & ACV37001997 and older model year vehicles powered by a diesel engine utilizing liquid coolantTwo models now equipped with electronic and mechanical temperature control valves respectively

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-437-1
  • Executive Order 437-1 / D437-1
  • ARB # D-437-1
  • Executive Order No: D-437-1
  • C.A.R.B. No. D-437-1
  • Resolution D-437-1
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-437-1 PDF

D-437-1 Document:

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