Steel Pre-Flattened O-Ring Head GasketSuit Ford 390-428 FE, 4.400"Bore, .041" Compressed ThicknessBrand: FELPROPart Number: FE1020Description: 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.