Approval Details

Valid E.O.


This Executive Order approved the specified parts on on October 30, 2003.
As of Wednesday, May 22nd, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
105032001-2003 GM DuramaxThe True Flow Air Intake System consists of air intake tubing and a replacement air filter cartridge that is installed in the original air filter housing.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-544-1
  • Executive Order 544-1 / D544-1
  • ARB # D-544-1
  • Executive Order No: D-544-1
  • C.A.R.B. No. D-544-1
  • Resolution D-544-1
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-544-1 PDF

D-544-1 Document:

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