The Fel-Pro PermaTorque cylinder head gasket set for Audi S4 is built for repair environments and to restore a reliable head seal on that engine. It’s designed to handle imperfect sealing surfaces while maintaining combustion integrity. The construction combines reinforced facing materials and steel armor for durability, a nonstick proprietary coating to seal small surface imperfections, and a steel core that reduces the need for retorquing head bolts.
Fel-Pro Audi S4 HS 26607 PT PermaTorque Engine Cylinder Head Gasket Set