Cometic's timing cover gasket for the Mazda 2.3L MZR (2006–2008) is an AFM material gasket: chemically blown nitrile synthetic rubber bonded to an aluminum core, .032 in thick. AFM offers about 85% recovery, strong torque retention and temperature resistance beyond 205°F, providing a reliable seal between timing cover and block without requiring additional sealants or re‑torquing.
Cometic 06-08 Mazda 2.3L AFM Timing Cover Gasket