Cometic Cylinder Head Gasket - 4.185" Bore - 0.040" Compression Thickness - Right Side - Multi-Layered Steel - GM LS-Series Backup Washer Unit includes black powder-coated aluminum

Unit includes black powder-coated aluminum frame

Holley 4500 Series

internally fluted

1/8 NPT Boost Reference Port

Cometic Cylinder Head Gasket - 4.185" Bore - 0.040" Compression Thickness - Right Side - Multi-Layered Steel - GM LS-Series Backup Washer Unit includes black powder-coated aluminumComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". 18 Bolt Heads. Right Side. 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