Supertech Performance VSI-M5.5V-16 Integral Valve Stem Seal Set 16pc Mitsubishi EVO X 4B11

These precision valve seals are critical components for maintaining proper oil control and preventing oil from entering the combustion chamber.

Key Features:

• 5.5mm stem diameter for precise fitment on 4B11 valves
• 11mm guide outer diameter ensures proper sealing
• 12.6mm seal outer diameter for optimal compression
• Viton material construction for high-temperature resistance
• Integral design combines seal and spring seat in one component
• Manufactured from high-quality rubber compound with special hi-temperature formulation

Supertech valve stem seals are precision-engineered to provide superior sealing performance in demanding racing and high-performance applications. The integral design simplifies installation while the Viton material offers excellent resistance to heat, petroleum products, and corrosive combustion gases. Compatible with Mitsubishi Lancer Evolution X GSR, MR, and Ralliart models equipped with the 2.0L turbocharged 4B11 engine.