CHEVROLET BB MK4 4.250 X .021 PRO COPPER HD GASKET – P132521

Description

Pro Copper Head Gaskets, for 1965-1990 396-454 Mark 4 Big Block Chevrolet.
Bore Opening: 4.250″; Gasket Thickness: .021″; Material: Annealed Copper;
*Pro Copper head gaskets require O-rings in block or head* For Self Sealing Copper Gaskets to be used with O-rings please see Titan (T13_ _ _ series) Head Gaskets.
For Self Sealing Copper Gaskets to be used without O-rings, please see ICS Titan (S13_ _ _ series) 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.