Supertech Performance RET-H66-T1-8 Valve Stem Seals T1 Style 6.6mm

Designed for demanding motorsport and high-performance street applications, these seals deliver superior oil control and long-lasting durability under extreme operating conditions.

Key Features:

• T1 Seal Style – Positive-type PTFE-lined rubber construction for tight oil metering and reduced oil consumption
• 6.6mm Guide O.D. – Precision-fit for 6.6mm outer diameter valve guides
• High-Temperature Resistance – Compound withstands sustained heat found in turbocharged, supercharged, and naturally aspirated performance engines
• OEM and Aftermarket Compatibility – Engineered to meet or exceed OEM specifications while supporting modified valvetrain setups
• Precision Manufacturing – Produced to tight tolerances consistent with Supertech's motorsport-grade valvetrain components

Supertech Performance is a trusted name in competitive motorsport, supplying valvetrain components to professional racing teams and serious engine builders worldwide. The RET-H66-T1-8 valve stem seals are an essential component in any professional engine rebuild or performance build requiring reliable oil control at the valve interface.