Approval Details

Valid E.O.


This Executive Order approved the specified parts on on November 14, 1986.
As of Tuesday, April 23rd, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
No. ATS 6.9L1983 through 1987 model year Ford Motor Company heavy-duty vehicles powered by a 6.9 liter Navistar International heavy-duty diesel engine.Modifications to the OEM emission-related parts due to the installation of the turbocharger kit include replacement of the air cleaner assembly and replacement of the OEM exhaust system with a 3" diameter exhaust system.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-171-1A
  • Executive Order 171-1A / D171-1A
  • ARB # D-171-1A
  • Executive Order No: D-171-1A
  • C.A.R.B. No. D-171-1A
  • Resolution D-171-1A
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-171-1A PDF

D-171-1A Document:

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