Manley 99-12 Ford 4.6L/281 5.4L/330 V8 37mm Race Series Stainless Steel Intake Valves (Set of 8)

These Manley Race Series intake valves are made from NK-842 stainless steel, a material chosen for its strength and resistance to heat. They feature a 37mm head diameter and are designed for engines that will see regular use, especially those operating under 8000 RPM. If you're rebuilding the top end of your 1999-2004 Ford Mustang's 4.6L or 5.4L V8, these valves are a solid choice for improved airflow and durability.

The under-head area is swirl polished to help smooth the path for air entering the cylinder, and the combustion face is fully machined to promote efficient burning. Chrome stems and hard tips are added to these valves to help them stand up to wear over time, giving you more miles and performance before needing further work. While these are intake valves, Manley also recommends their exhaust valve counterparts for alcohol-fueled engines, indicating the robust nature of this Race Series line.

This set includes eight intake valves, enough for a V8 engine. Ensure you have the correct valve seals and retainers for your specific application when installing these.