Pro Copper Head Gaskets for Ford 289-351ci Windsor. Bore Opening: 4.010″; Gasket Thickness: .050″; Material: Annealed Copper; *Pro Copper head gaskets require sealant and O-rings in the block or head* For Self Sealing Copper Gaskets to be used with O-rings please see Titan Head Gaskets. For Self Sealing Copper Gaskets to be used without O-rings, please see ICS Titan Head Gaskets. Pro Copper HG Inst O-Ring Instructions
Qualifies for Contingency Payout in selected classes with proof of purchase and decals on both sides, see respective association websites for class posting details.