The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.
Cometic Ford 3.5L Gen-1 EcoBoost .47in HP Bore 95mm LHS Cylinder Head Gasket
Ford 3.5L Gen-1 EcoBoost .047in. HP Cylinder Head Gasket; 95mm Bore; LHS
Ford 3.5L Gen-1 EcoBoost .047 " HP Cylinder Head Gasket, 95mm Bore, LHS
Ford 3.5L Gen-1 EcoBoost Cylinder Head Gasket
Ford 3.5L Gen-1 EcoBoost Cylinder Head L
Cometic Cylinder Head Gasket
Engine Cylinder Head Gasket
Cylinder Head Gasket