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Cometic Viton rear main seal kit for Chevrolet 400 Gen-1 small block V8 is a two-piece aluminum-race variant built for wet and dry sump applications. The high-temperature fluoroelastomer compound offers chemical and heat resistance for durable sealing. Cometic validates products with dyno and assembly testing to support long-term reliability.
Cometic Chevrolet 400 Gen-1 Small Block V8 Viton Rear Main Seal - 2 Piece - Aluminum 400 Sprint
