Rear Split Seal- BBC Crankshaft

The Rear Split Seal for BBC Crankshaft from Peterson Fluid is a precision-engineered component designed to prevent oil leakage at the rear main bearing of big-block Chevrolet (BBC) engines. This seal is essential for builders or mechanics working on BBC powerplants, whether restoring classic muscle cars or building high-performance street engines.

Peterson Fluid's split-design seal creates a dependable barrier between the crankshaft and the engine block cavity, utilizing materials and tolerances that withstand sustained RPM loads and oil pressure cycling. The split configuration allows for installation without removing the crankshaft, which is advantageous when working within tight engine bay constraints or reassembling a fully dressed long-block.

This rear split seal is ideal for BBC engine builders, restoration shops, and serious enthusiasts performing in-frame crankshaft work or complete engine rebuilds. It is specifically designed for big-block Chevrolet engines, ensuring a dry seal even under sustained boost or nitrous conditions.