Ford Performance Cylinder Head Gasket Pair (351W Big Bore, 4.125-Inch Bore, 4.160-Inch Gasket Bore) - M-6051-B341

For 351W-style blocks with a 4.125-inch overbore (4.160-inch gasket bore) - competition use only

This Ford Performance 351W head gasket pair (0.040-inch compressed thickness, left and right) is for big bore 351 Windsor engines such as Ford Performance Z351 and Boss 351 blocks bored to 4.125 inches.