The Fel-Pro PermaTorque cylinder head gasket set for Nissan D21 is engineered for repair-grade sealing with proprietary sealing technologies. It’s designed to handle imperfect sealing surfaces, combining reinforced facing materials and steel armor for durability. A nonstick anti-friction coating helps seal small surface imperfections, and the PermaTorque steel core design reduces the likelihood of needing head-bolt retorquing after installation.
Fel-Pro Nissan D21 HS 9210 PT-1 PermaTorque Engine Cylinder Head Gasket Set