C9900 EST motor gasket kit. Standard bore

Rebuilding an early Shovelhead requires precision, and this Cometic EST motor gasket kit provides exactly that for 1966 to 1969 models. Sold as a set, this kit is complete with every gasket, seal, and O-ring needed for a complete overhaul, including the primary gaskets. It features Cometic’s Extreme Sealing Technology, utilizing .040-inch thick Multi-Layer Steel head gaskets that eliminate the need for dowel pin O-rings. The cylinder base and rocker cover gaskets are made from .020-inch Single-Layer Steel coated with Viton rubber, ensuring they will not weep, tear, or become brittle over time. It is the most reliable way to seal up your vintage Shovel and keep the oil on the inside where it belongs.