S/D 2.350 Intake Valve

The S/D 2.350 Intake Valve from Manley is designed for serious engine builders and performance enthusiasts who require high-quality valve components. This intake valve is essential for controlling airflow in high-revving and modified engines, ensuring they meet volumetric efficiency demands that stock valves cannot satisfy. Whether you are building a street performance engine, preparing for track use, or restoring a classic vehicle with modern power goals, the S/D 2.350 is engineered to deliver exceptional performance.

The S/D (Super Duty) designation signifies enhanced material composition and manufacturing tolerances, allowing it to withstand elevated cylinder pressures, aggressive cam profiles, and extended RPM ranges. With a head diameter of 2.350 inches, this valve optimizes flow characteristics for engines that require larger valve seats while minimizing weight. Constructed from premium valve steel, it offers excellent resistance to thermal stress and valve seat recession, making it suitable for high compression ratios and forced induction systems.

Engine builders, machine shops, and dedicated enthusiasts trust Manley intake valves for refreshing cylinder heads on performance-modified engines across various platforms and displacements. The precision machining and shot-peening processes enhance fatigue resistance and longevity, ensuring reliable performance under demanding conditions. This valve is ideal for both naturally aspirated and boosted applications, making it a versatile choice for any performance build.