The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.
An additional HP Shim Layer can be added to provide increased stress around the combustion seal
Cometic Ford 3.5L Gen-1 EcoBoost .047in HP Cylinder Head Gasket, 95mm Bore, RHS
Ford 3.5L Gen-1 EcoBoost .047in. HP Cylinder Head Gasket; 95mm Bore; RHS
Ford 3.5L Gen-1 EcoBoost .047" HP Cylinder Head Gasket, 95mm Bore, RHS
Proprietary high temperature coatings along with embossments
Ford 3.5L Gen-1 EcoBoost Cylinder Head Gasket
Ford 3.5L Gen-1 EcoBoost Cylinder Head R
Embossed Outer Layers Coated w/Viton
Engine Cylinder Head Gasket
Cylinder Head Gasket