Approval Details

Valid E.O.


This Executive Order approved the specified parts on on November 27, 2008.
As of Monday, May 27th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2009 and older vehicles (see device manufacturer catalog).The Cyclonefuelsaver is a one-piece metal device installed either in the intake air ducting or inside the air cleaner. No emission control components are removed or relocated with the installation of the Cyclonefuelsaver.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-581-4
  • Executive Order 581-4 / D581-4
  • ARB # D-581-4
  • Executive Order No: D-581-4
  • C.A.R.B. No. D-581-4
  • Resolution D-581-4
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-581-4 PDF

D-581-4 Document:

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