High-Performance 5/16 Valve Stem Seals

Maintain precise oil control in your competition engine with Allstar Performance 5/16 PTFE Valve Stem Seals. These seals are specifically designed for high-performance applications where heat and RPM are constant factors. The positive stop design ensures that the seal remains firmly in place, providing a consistent barrier against oil leakage into the intake or exhaust ports. Built from high-quality PTFE, these seals offer excellent resistance to chemical degradation and extreme heat.

Technical Specifications

• Material: High-performance PTFE construction.
• Fitment: Designed for 5/16 inch valve stems and .531 inch guide diameters.
• Performance: Positive stop design prevents seal migration.
• Quantity: Set of 16 seals, perfect for complete cylinder head servicing.
• Application: Ideal for high-revving street or track engines.

Choosing the right valve stem seal is a critical step in any engine build. These Allstar Performance seals are engineered to meet the rigorous demands of racing, offering a reliable solution that helps maintain engine power and longevity. The .531 inch guide fitment provides a secure, leak-proof seal that stands up to the pressures of high-lift camshafts and aggressive valve springs. Whether you are performing a top-end refresh or a full engine build, these seals provide the peace of mind that your valvetrain is protected. Get the best parts for your build at GGCRACING.