Federal Mogul HS 26521 PT PermaTorque Engine Cylinder Head Gasket Set

The Federal Mogul / Fel-Pro HS 26521 PT is a PermaTorque Engine Cylinder Head Gasket Set engineered specifically for the real-world repair environment. Designed to deliver a reliable, long-lasting seal even on imperfect or aged sealing surfaces, this head gasket set meets the performance and durability standards that professional technicians and engine builders have trusted for over a century.

The head gasket is one of the most critical components in any engine, sealing the cylinder head to the engine block to maintain compression and prevent coolant or oil from entering the combustion chamber. Over time, cylinder heads can warp, pit, or develop micro-surface imperfections that compromise a standard gasket's ability to seal. The HS 26521 PT is built to address exactly these real-world conditions.

Key Features:

• PermaTorque Technology — Proprietary multi-layer steel (MLS) construction with LaserWeld stopper layers for consistent, controlled compression and superior sealing
• Nonstick Anti-Friction Coating — Proprietary coating seals minor surface scratches and imperfections without the need for additional sealers
• No-Retorque Design — Steel core construction helps eliminate the need for retorquing head bolts after initial installation
• Application-Specific Engineering — Engineered and validated specifically for the intended engine application to ensure an optimal fit and seal
• Complete Set — Includes all gaskets needed to complete the cylinder head repair
• Tested and Validated — On-vehicle tested and validated by Fel-Pro engineers for reliable, long-term performance

Fel-Pro, a Federal Mogul brand, has been manufacturing precision sealing solutions since 1918 and remains the preferred choice among professional engine builders, technicians, and performance enthusiasts. The HS 26521 PT head gasket set delivers the quality and confidence needed for a successful engine repair.