Federal Mogul HS26524PT Fel-Pro PermaTorque Engine Cylinder Head Gasket Set

The Fel-Pro HS 26524 PT is a complete engine cylinder head gasket set engineered by Federal-Mogul's Fel-Pro brand for Subaru 2.5L horizontally opposed (boxer) four-cylinder engines. Designed specifically for the real-world repair environment, this set delivers a reliable, long-lasting seal even on imperfect or lightly worn sealing surfaces.

Key Features:

• PermaTorque MLS Technology — Multi-layer steel head gasket construction provides a robust combustion seal and withstands significant casting motion from Subaru's boxer engine design
• Proprietary Nonstick Coating — Anti-friction coating accommodates minor surface scratches and imperfections for a superior seal without additional surface prep
• No-Retorque Design — Steel core construction eliminates the need to retorque head bolts after initial installation
• LaserWeld Stopper Layer — Precisely engineered compression limit prevents head lift and bore distortion while ensuring an airtight combustion seal
• PermaDry Molded Rubber Valve Cover Gaskets Included — Premium rubber valve cover gaskets are included in the set
• Premium Valve Stem Seals Included — High-quality valve stem seals are part of the complete set
• Application-Specific Materials — Graphite or reinforced fiber facing material with steel armor for strength and long-term durability

Engine Specifications:

• Engine Type: Horizontally Opposed (Boxer) 4-Cylinder (Block: H)
• Displacement: 2.5L (2498cc / 152ci)
• Bore: 3.70 in (94.0 mm)
• Stroke: 3.54 in (90.0 mm)
• Engine Designations: FB25, FB25BA

Important Installation Notes:

• Head bolt replacement is required — replacement head bolts are not included

The Fel-Pro HS 26524 PT head gasket set is the professional-grade solution for Subaru engine rebuilds and head gasket replacements, trusted by both independent shops and dealership technicians alike.