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This Cometic rear main seal fits Chevrolet Mark IV big block V8 engines as a two-piece, double-split unit suitable for wet or dry sump systems. Engineered and tested in Cometic's assembly and dynamometer facilities, it meets or exceeds OEM standards for durability and sealing. Install it when servicing or rebuilding Mark IV big block engines to preserve crankcase sealing and prevent oil leakage.
Cometic Chevy Mark IV Big Block V8 Rear Main Seal 2 Pc Double Split Seal Wet & Dry Sump 86665
