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c. Cap Adapter - GM - Assenmacher Specialty Tools

Part #: FZ450-4A

Cap Adapter - GM
  • For checking pressure relief valve in radiator cap.
  • Used in conjunction with Stant tester #ST12270.
  • Applicable: Late model GM X-cars with the 2.5L engine, J-cars with the 1.8L and 2.0L engine, and all popular trucks with the larger diameter (2-11/16" O.D. "B" size) filler neck.


  • Picture is of the FZ450 3 Piece Adapter Kit.

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    This product was added to our catalog on Thursday 01 February, 2007.