Approval Details

Valid E.O.


This Executive Order approved the specified parts on on March 15, 2000.
As of Sunday, July 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModelsModification
LCH4853601999 and 2000 model-year General Motor trucks equipped with either a 4.8, 5.3 or 6.0L engineThe Exhaust Headers are a short tube style header manufactured out of 16 gage mild steel tubing. The oxygen sensor is in the stock location. 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-479-1
  • Executive Order 479-1 / D479-1
  • ARB # D-479-1
  • Executive Order No: D-479-1
  • C.A.R.B. No. D-479-1
  • Resolution D-479-1
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-479-1 PDF

D-479-1 Document:

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