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89-02 5.9L Cummins Rear Cam Expansion Plug

Rebuilding your engine? We recommend replacing this plug any time you have your engine out. It installs behind the engine adapter plate over the back of the cam shaft.

Opitonal oring seal above. (Part number, 3926047)

Cummins part number: 3900687

Lame California Prop 65 Notice