RBS realizes the importance of a quality crank seal so we are proud to offer this Buna rubber crank seal to fit the Casale, KB or Donovan Hemi gear drive when switching over to a RCD splined crankshaft.
If the racer is running the PSI spline the stock seal will work but if going to the RCD spline crank hub the seal must be changed to work with the new crank hub. Seal measures 3.195" O.D. x .438" thick x 2.315" I.D. where the hub rides.
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