Supertech Performance VS-H6.6I-8 Intake Valve Stem Seals 6.6mm Polyacrylic

Supertech Performance VS-H6.6I-8 valve stem seals are precision-engineered intake valve seals designed for Honda LS-series and Mitsubishi 4G63 engines with reduced diameter valve guides. Manufactured from high-quality polyacrylic rubber compound, these seals provide excellent oil control and wear resistance for naturally aspirated and performance applications.

Key Specifications:

• Stem diameter: 6.6mm
• Valve guide outer diameter: 12mm
• Seal outer diameter: 13.7mm
• Material: Polyacrylic rubber compound

Application:

• Honda B18A1, B18B1, B20B engines (Integra LS, CR-V)
• Mitsubishi 4G63 turbocharged engines (Evo, Eclipse, Talon)
• Honda D16A1 non-VTEC engines with reduced diameter guides

Supertech valve stem seals are engineered to maintain proper oil control while withstanding the demands of high-performance engines. The polyacrylic material offers superior durability compared to OEM rubber seals, making them ideal for rebuilt engines, performance applications, and preventive maintenance. These intake-specific seals work in conjunction with exhaust valve seals (sold separately) to complete a full valve train refresh.