New Fel-Pro PermaTorque MLS Severe Duty Head Gaskets


Federal-Mogul has introduced a line of Fel-Pro PermaTorque MLS performance head gaskets engineered to address potential cylinder-head lift issues encountered on some supercharged, turbocharged and nitrous-equipped small-block Ford engines. New Fel-Pro PermaTorque MLS “Severe Duty” head gaskets combine Federal-Mogul’s industry leading multi-layer-steel technology with additional design features that accommodate extreme head lift. The gaskets are available in two design configurations: “SD4,” featuring four layers of embossed full-hard stainless steel and no shim layer, resulting in additional “spring” action; and “SD5,” which comprises four embossed stainless steel layers and one shim layer, providing the same “spring” action and additional (up to .0052-inch) thickness.

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