Cometic GM/Mercury Marine 525/625 502 Gen-VI Big Block V8 .040in MLS Cylinder 4.470in Bore HG 4-2-1 CERAMIC HEADER 15mm Extreme Duty Exhaust Valves

15mm Extreme Duty Exhaust Valves (Set of 24)

2003-2008 Honda Element

0L DOHC 16V 35

GReddy Silicone Type-A shift knobs cover - Black

5 Inch O2 Sensor Extension

Cometic GM/Mercury Marine 525/625 502 Gen-VI Big Block V8 .040in MLS Cylinder 4.470in Bore HG 4-2-1 CERAMIC HEADER 15mm Extreme Duty Exhaust ValvesComprised of multiple embossed layers of stainless steel with the outer layers utilizing a Viton rubber coating. Compressed operating thickness is 0. 040". 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