Federal Mogul HS 26323 PT-1 Fel-Pro Engine Cylinder Head Gasket Set

The Federal Mogul / Fel-Pro HS 26323 PT-1 is a premium engine cylinder head gasket set engineered for Toyota, Lexus, and Scion applications. Designed to deliver professional-grade sealing performance, this head set includes all gaskets and seals required for valve grind or cylinder head repairs.

Fel-Pro's PermaTorque MLS (Multi-Layer Steel) technology with LaserWeld stopper layer construction provides an exceptionally strong combustion seal, reducing the risk of gasket blowout even under demanding engine conditions. An exclusive proprietary coating allows the gasket to accommodate rougher sealing surface finishes up to 80 Ra, compensating for the surface imperfections common in aging cylinder heads.

Key Features:

• PermaTorque MLS with LaserWeld technology for a superior combustion seal
• Application-specific design engineered to meet exact OEM sealing requirements
• Exclusive coating withstands higher engine temperatures and accommodates imperfect sealing surfaces up to 80 Ra
• No additional sealers required — premium materials provide proper torque retention
• No-retorque design eliminates the need to re-tighten head bolts after initial installation
• Directional installation markings for correct gasket orientation
• Complete set includes all gaskets and seals needed for a full head or valve grind repair
• Tested on-vehicle and validated by Fel-Pro for optimal performance

One of the most critical seals in any engine, the head gasket must withstand constant thermal cycling while sealing combustion pressure, coolant passages, and oil galleries simultaneously. The Fel-Pro HS 26323 PT-1 is trusted by professional technicians and serious DIYers alike to restore proper compression and prevent coolant or oil intrusion into the cylinders. Before installation, always inspect and refinish cylinder head and block deck surfaces to manufacturer specifications.