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The Peterson big block Chevy crank seal corresponds to Jesel SEL37300 and is offered as a front crank replacement for big block applications. Peterson seals are built for use on engines running crankcase vacuum and are intended to maintain elevated vacuum levels that assist with crankcase control. That vacuum-holding quality benefits dry-sump systems and other vacuum-managed engine configurations.
Peterson Fluid Systems Chevrolet Big Block Crank Seal (Jesel SEL 37300)
