Fel-Pro Performance Steel O-Ring Head Gasket, Two coolant holes per end Suit Big Block Chevy Mark IV block, 4.540" gasket bore, .039" compressed thickness
Fits Mark IV Block
Does not Fit Gen V Block
Does not Fit Gen VI Block
Two coolant holes per end.
Three lower coolant holes
Fel-Pro wire ring head gaskets, with a stainless steel combustion armour, proprietary-coated composite facing material and a solid steel core deliver and unbeatable combination of quality, capability and value making them the single best choice for the vast majority of racing and street performance engines.