Approval Details

Valid E.O.


This Executive Order approved the specified parts on on June 16, 1998.
As of Friday, April 19th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModificationRemarks
20171996-1997 Chevrolet/GMC PU 1500, 1996-1997 Chevrolet Suburban 1500, 4WD w/o A.I.R. Single Cat., 350Header and connector/Y-pipe assemblyHeaders are manufactured out of 16 gage steel

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-164-4
  • Executive Order 164-4 / D164-4
  • ARB # D-164-4
  • Executive Order No: D-164-4
  • C.A.R.B. No. D-164-4
  • Resolution D-164-4
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-164-4 PDF

D-164-4 Document:

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