Cometic Pontiac 428/455 V8 .051in MLS Cylinder Head Gasket - 4.380in Bore - No Water HolesThe HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block. This Part Fits: Year Make Model Submodel 1975 Buick LeSabre Base 1975 Buick LeSabre Custom 1975 Oldsmobile 98 Luxury 1975 Oldsmobile 98 Regency 1975 Oldsmobile Custom Cruiser Base 1975 Oldsmobile Custom Cruiser Panel 1975 Oldsmobile Delta 88 Base 1975 Oldsmobile Delta 88 Royale 1968 1976 Pontiac