Approval Details

Valid E.O.


This Executive Order approved the specified parts on on June 8, 1993.
As of Friday, March 31st, 2023 this Executive Order has not been overturned or superceeded.

Approved Parts

1993 and older Ford vehicles powered by Navistar Intl. 6.9L/ 7.3L heavy-duty diesel engine.New air cleaner. Exhaust system terminates in 3 inch OD collector. PCV breather connection relocated.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-171-7
  • Executive Order 171-7 / D171-7
  • ARB # D-171-7
  • Executive Order No: D-171-7
  • C.A.R.B. No. D-171-7
  • Resolution D-171-7
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-171-7 PDF

D-171-7 Document:

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