Approval Details

Valid E.O.


This Executive Order approved the specified parts on on October 27, 2006.
As of Sunday, February 25th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

2005 through 2007 model year Ford Mustangs equipped with a 4.6L engineThe Ford Performance/Ultimate Normally Aspirated Package includes shorty exhaust headers manufactured out of 16 gage stainless steel, 4:10 gear set, open element air filter, charge motion delete plate (optional), and a ECU programmer with no user adjustments.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-536-4
  • Executive Order 536-4 / D536-4
  • ARB # D-536-4
  • Executive Order No: D-536-4
  • C.A.R.B. No. D-536-4
  • Resolution D-536-4
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-536-4 PDF

D-536-4 Document:

Current View

Previous E.O. D-536-3 | Previous E.O. D-535 | Next E.O. D-536-5 | Next E.O. D-537