Approval Details

Valid E.O.


This Executive Order approved the specified parts on on March 16, 2006.
As of Monday, May 27th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2006 and older model-year diesel engines used in heavy-duty on-road motor vehiclesThe Phantom Switch Diesel Particulate Filter is an actively regenerated filter that requires regeneration after approximately 90 hours of operation or when the backpressure monitor indicates excessive pressure.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-603
  • Executive Order 603 / D603
  • ARB # D-603
  • Executive Order No: D-603
  • C.A.R.B. No. D-603
  • Resolution D-603
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-603 PDF

D-603 Document:

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