Manley LS1 Exhaust Valve Set 11681-8 for GM LS-Series Engines, 1.575 Inch Head Diameter, Stainless Steel

The Manley LS1 Exhaust Valve set (Part Number 11681-8) is designed for high-performance GM LS-Series engines. These valves feature a 1.575-inch head diameter and a 0.3136-inch stem diameter, ensuring optimal airflow and durability under demanding conditions. Crafted from stainless steel, they provide excellent resistance to heat and corrosion, making them suitable for extreme duty applications. The set includes eight valves, ideal for complete engine rebuilds or performance upgrades where reliable exhaust flow is critical. Each valve measures approximately 4.92 inches in length, offering precise fitment and consistent performance. These valves are engineered for professionals seeking high-quality components to maximize engine efficiency and power output under extreme conditions. Their robust construction and precise manufacturing standards ensure longevity and consistent operation in high-performance applications. Whether upgrading a stock engine or building a race-ready powerplant, the Manley LS1 Exhaust Valves deliver superior quality and reliability, making them a valuable addition to your engine components.

Features:

• Designed for GM LS-Series engines with a 1.575-inch exhaust valve diameter

• Constructed from high-strength stainless steel for heat and corrosion resistance

• Set of 8 valves suitable for complete engine rebuilds or performance upgrades

• Valve stem diameter: 0.3136 inches for optimal flow and durability

• Valve length approximately 4.92 inches to ensure proper fit and performance