Ferrea VS1011-1 Viton Intake Valve Stem Seal 6.57mm Mitsubishi 4G63

The Ferrea VS1011-1 is a high-performance Viton intake valve stem seal designed specifically for Mitsubishi 4G63 and 4G63T engines found in DSM vehicles (Eclipse, Talon), Galant VR-4, and Evolution models. This precision-engineered seal features a 6.57mm valve stem size and is sold individually, allowing for flexible replacement options.

Key Features:

• Premium Viton rubber compound construction for superior heat resistance
• High temperature rating of 475°F compared to OEM 300°F seals
• Stiffer retaining springs ensure precise fit and positive sealing
• Resistant to extreme heat, oil additives, and abrasion
• Provides exceptional oil control while maintaining proper lubrication
• Race-proven design backed by over 45 years of Ferrea engineering

Ferrea valve seals are manufactured using advanced technology developed through Formula 1, IndyCar, NASCAR, and drag racing programs. The Viton material provides precise oil control and maximum durability even at high RPM, making these seals ideal for both street performance and racing applications. When rebuilding your 4G63 cylinder head, these seals work in conjunction with Ferrea valve guides (VG1050) for optimal performance.