The Cometic Chrysler R3 race block .188" fiber timing cover gasket uses aluminum foamet material — nitrile foam bonded to an aluminum core — to create a compressible, rigid gasket with strong sealability. It’s engineered to provide an excellent seal between the timing cover and block and performs across varied flange conditions for race or high-demand R3 block applications where a durable timing cover seal is required.
Cometic Chrysler R3 Race Block .188in Fiber Timing Cover Gasket