You could probably pick the O-ring out w/ a very small flat screwdriver or small nail. I don't recall new springs in the kit. The nylon check valves in my lift pump looked fine, so not sure I did much by rebuilding it. I was mainly trying to insure the rod didn't leak into the crankcase.

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans