Reply To: Seal kit for ’59 OMC RD21?

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June 3, 2025 at 8:13 am #296990
Don
Participant

    US Member

    787138909Oftentimes these kits include a few extra items to fit a variety of gearcases.  This kit is an aftermarket “Sierra” kit so it doesn’t seem any part numbers will match the original parts book.  Alot depends on whether or not you still have the original gearcase on the engine.  Oftentimes parts change slightly on newer gearcase assemblies.

    The price on this seal kit seems very reasonable, worth the risk.  Try to “dry test fit” the seals prior to assembly to make sure you have the right ones…