Approval Details

Valid E.O.


This Executive Order approved the specified parts on on April 2, 1999.
As of Tuesday, May 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
LCH50571987 to 1995 General Motor trucks equipped with either a 5.0 or 5.7L engineThe Exhaust Headers are a short tube style header manufactured out of 16 gage mild steel tubing. The location of the oxygen sensor is located in the collector of the header. Connecting pipes manufactured out of 16 gage mild steel are included

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-479
  • Executive Order 479 / D479
  • ARB # D-479
  • Executive Order No: D-479
  • C.A.R.B. No. D-479
  • Resolution D-479
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-479 PDF

D-479 Document:

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