Cometic Chevrolet Mark-IV Big Block V8 Rear Main Seal - 2 Piece

This two-piece rear main seal from Cometic Gasket is constructed from Viton, a high-end fluoroelastomer rubber known for its exceptional heat resistance, chemical resistance, and overall durability. It's designed specifically for Chevrolet Mark IV Big Block V8 engines, helping to keep oil contained within the crankcase and preventing leaks. This seal is a solid option for rebuilding or repairing the bottom end of your engine, ensuring a clean and efficient operation.

The Viton material offers a significant advantage over standard rubber seals, especially in high-heat environments common to big block V8s. Its robust nature means it can withstand the demanding conditions found in the crankcase, contributing to a longer service life and more reliable sealing. This seal fits a wide range of Chevrolet vehicles from the mid-60s through the early 80s, including popular models like the Chevrolet Impala, C10 Pickup, and Camaro, making it a versatile choice for many classic builds.