Cometic 4.540" Bore Head Gasket 0.051" Thickness Multi-Layered Steel BRODIX Head - BB Chevy Aero Race Wheel Shims are used to fill

Shims are used to fill space between the actuator

GMC: Sierra 1500 19 - 19

5-7/8 to 11-7/8 in Long

Pontiac: GTO 68 - 72

18mm Double D to 1 in 18 Spline

Cometic 4.540" Bore Head Gasket 0.051" Thickness Multi-Layered Steel BRODIX Head - BB Chevy Aero Race Wheel Shims are used to fillComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 051". Suitable for Brodix Big Duke Brodie Head. 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