Approval Details

Valid E.O.


This Executive Order approved the specified parts on on March 7, 1994.
As of Sunday, July 14th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1994 and older model-year diesel vehicles.The RCI Purifier is intended for use with a required pollution control system.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-328-1
  • Executive Order 328-1 / D328-1
  • ARB # D-328-1
  • Executive Order No: D-328-1
  • C.A.R.B. No. D-328-1
  • Resolution D-328-1
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-328-1 PDF

D-328-1 Document:

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