Cometic 4.160 MLS Head Gasket .040 - Pontiac 389-455 RS003C0116 Valve has 1/8"NPT inlet and

Valve has 1/8"NPT inlet and outlet and is rated at 2

3000 / 6500 RPM

Breather kit provides a remote location for adding a larger breather to many popular manual transmissions

Designed with Impact's exclusive high-grip fluted sole

Cometic 4.160 MLS Head Gasket .040 - Pontiac 389-455 RS003C0116 Valve has 1/8"NPT inlet andComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 027". Cometic MLS (Multi Layer Steel) Head Gaskets provide maximum sealing performance for todays high output engines and require no sealants. MLS gaskets are ideal for both aluminum heads to aluminum blocks and aluminum heads to cast iron blocks. They can withstand the shearing force created by the two