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The Cometic single split rear main seal is made for Chevrolet Mark‑IV big block V8 applications and is offered for both wet and dry sump setups. The seal uses AFM material — a chemically blown nitrile synthetic rubber bonded to an aluminum core — with about 85% recovery, temperature resistance above 205°F, no need for sealants or re‑torquing, and manufactured to meet or exceed OEM quality for the listed application.
Cometic Chevy Big Block V8 Single Split Rear Main Seal
