Approval Details

Valid E.O.

Validity

This Executive Order approved the specified parts on on November 22, 1994.
As of Thursday, April 25th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

ModelsRemarks
1990-1994 GM trucks equipped with 7.4L gasoline enginesThe Stage I Kit includes the following items: Low restriction air filter (K & N type), 2.5" crossover pipes, "Y" pipe with an oxygen sensor connection, and a single inlet high flow muffler. The Stage II Kit includes the following items: Low restriction air filter (K & N type), #14 gage metal Tri-Y style headers, 2.5" crossover pipes, "Y" pipe with an oxygen sensor connection, and a single inlet high flow muffler. Ignition timing can either be set at the stock timing of 4 degrees BTDC or a suggested Banks' setting of 6 degrees BTDC.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-161-40
  • Executive Order 161-40 / D161-40
  • ARB # D-161-40
  • Executive Order No: D-161-40
  • C.A.R.B. No. D-161-40
  • Resolution D-161-40
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-161-40 PDF

D-161-40 Document:

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