Steel Pre-Flattened O-Ring Head Gasket Suit SB Chev 400, 4.200" Bore, .041" Compressed Thickness

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.