Enginetech S805V-20 Valve Stem Seal Set GM 4.8L 5.3L 6.0L Gen III

The Enginetech S805V-20 is a complete valve stem seal set designed specifically for GM Gen III small block engines, including 4.8L, 5.3L, and 6.0L variants. This is the first design configuration for positive valve seals used in these popular Vortec engines.

Key Features:

• Engineered for GM 4.8L (LR4), 5.3L (LM7, L33, LM4), and 6.0L (LQ4, LQ9) engines
• First design specification for proper fitment on early Gen III cylinder heads
• High-temperature resistant materials prevent oil consumption and smoke
• Precision-molded construction ensures consistent sealing and valve guide protection

These valve stem seals are essential components during engine rebuilds or valve jobs, controlling oil flow down the valve stems while maintaining proper lubrication. The positive seal design provides superior oil control compared to deflector-style seals, making them ideal for performance and heavy-duty applications. Each set includes enough seals for a complete V8 engine rebuild.