Cometic Rocker Box Gasket Kit For Harley Twin Cam Cometic Gaskets advanced engineering and manufacturing process allows them to bring you the best available gaskets for your bike. Design engineers have the ability to analyze the environment the gasket will perform in, select the proper material, and apply the appropriate technology to offer the highest performing gaskets available on the market. Features: Rocker box gasket kit Kit includes all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxes