Approval Details

Valid E.O.


This Executive Order approved the specified parts on on December 18, 1995.
As of Sunday, July 14th, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

Part NumberModels
31821,31822 31823GM V8 engines equipped with either a throttle body fuel injection system or a conventional carburetor, and flat tappet lifters : application 1992 and older vehicles w/ 305 to 350 CID small block.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-161-43
  • Executive Order 161-43 / D161-43
  • ARB # D-161-43
  • Executive Order No: D-161-43
  • C.A.R.B. No. D-161-43
  • Resolution D-161-43
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-161-43 PDF

D-161-43 Document:

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