1984-1999 Harley Davidson Touring / Softail / Dyna Cylinder Base Gasket (3-5/8 Big Bore Gasket)

This NBR rubber-coated steel base gasket provides a high-performance seal between the cylinder and the engine block to prevent oil leaks and maintain compression integrity. The steel core offers essential structural strength to resist displacement under pressure, while the NBR coating fills surface imperfections for a superior, airtight fit. Engineered to handle the thermal expansion and vibrations of the Evolution Big Twin engine, this direct-fit gasket ensures long-term durability and clean engine operation.

This gasket fits 1984-1999 Harley Davidson Dyna, Softail, and Touring models equipped with the Evolution Big Twin engine.