Fel-Pro Nissan 510 21178 PT PermaTorque Engine Cylinder Head Gasket

This is the Fel-Pro PermaTorque engine cylinder head gasket, part number 21178PT. It's designed to create a reliable seal between your engine block and cylinder head, which is crucial for keeping combustion gases contained and coolant and oil separate. This gasket is built specifically for the repair environment, meaning it's made to handle imperfect sealing surfaces that you might encounter during an engine rebuild or repair. Fel-Pro uses proprietary materials and unique design features to ensure it seals well, even on those less-than-perfect surfaces.

What sets this gasket apart is its construction. It features a steel core for strength and durability, often combined with graphite or reinforced fiber facing material. It also has a special nonstick, anti-friction coating that helps seal small scratches and imperfections on the mating surfaces. A notable benefit is its 'no retorque' design, meaning you typically don't need to go back and tighten the head bolts after initial installation, which simplifies the repair process. This gasket is a solid option for many Nissan vehicles from the late 60s through the late 70s and early 80s, including models like the 200SX, 510, and 620 Pickup.