These Fel Pro Head Gaskets feature a PermaTorque/blue gasket body with a solid-steel core to minimize torque loss and gasket blowout. These Fel-Pro performance head gaskets have a wire-ring combustion seat with stainless steel for extra sealing force around combustion chambers.

Made with a pre-flattened steel-wire ring Fel-Pro performance head gaskets have the strength of steel-wire sealing and the minimum brinelling of aluminum heads. loc wire combustion seal cylinder heads require special machining for receiver grooves. These head gaskets are recommended for turbo nitrous and supercharged applications.