Proflow's brand new Holden V8 cast aluminium timing covers are the best replacements for the factory one found in your old 253/308/304 V8 engine. This timing cover comes pre-installed with a new seal and includes high-quality gaskets for a hassle free installation. Cast from high strength A356-T6 aluminium which is stronger than factory versions and is the perfect replacement for your street/strip performance Holden V8 engines.