Supertech Performance KWIVN-3450 Intake Valve Stem Seal Kit

The Supertech Performance KWIVN-3450 is an intake valve stem seal kit engineered for performance and racing engine applications. Supertech Performance is a globally recognized manufacturer of premium valvetrain components, trusted by professional engine builders and motorsport teams worldwide.

Valve stem seals are a critical engine component responsible for controlling oil flow along the valve stem and preventing oil from entering the combustion chamber. Worn or inadequate seals lead to increased oil consumption, fouled spark plugs, and compromised combustion efficiency. Supertech manufactures its intake valve stem seals using a high-quality rubber compound, while exhaust applications utilize a special high-temperature compound for enhanced durability under extreme heat.

Key Features:

• Precision-manufactured intake valve stem seals designed for performance and racing engine builds
• High-quality rubber compound construction engineered for consistent sealing under elevated temperatures and pressures
• Reduced outer diameter design compatible with dual valve spring setups, eliminating potential spring-to-seal clearance interference
• Manufactured to tight tolerances for proper fit on the valve guide
• Suitable for naturally aspirated, turbocharged, and supercharged engine applications
• Can serve as a direct performance upgrade or OEM replacement for worn seals

Supertech recommends pairing their valve stem seals with their performance valves for optimal valvetrain sealing. The KWIVN-3450 kit is the trusted choice for engine builders demanding reliable, race-proven sealing solutions in high-performance builds.