Supertech Performance VS-T5.5-E-6 Exhaust Valve Stem Seal Set 5.5mm Viton - 6 Pack

These seals are engineered to prevent oil from leaking past the valve guides into the combustion chamber, eliminating blue smoke and reducing oil consumption.

Key Features:

• 5.5mm valve stem diameter for aftermarket performance valves
• Viton high-temperature compound construction for exhaust applications
• Valve guide outer diameter: 10.3mm
• Seal outer diameter: 12.5mm
• Superior heat resistance compared to OEM rubber seals
• Compatible with E85 and race fuel additives

Supertech exhaust valve stem seals feature a special high-temperature Viton compound that offers improved durability and performance over factory rubber seals. The Viton material is rated for continuous operation at temperatures up to 400°F, making these seals ideal for high-performance, turbocharged, or racing applications. These seals are specifically sized for 5.5mm valve stems commonly found on aftermarket performance valves from Supertech, Ferrea, and other manufacturers. Note that these seals require 5.5mm valve stems and will not fit factory valves with smaller stem diameters.