5/16 Valve Lock - 10 Degree Steel

The 5/16 Valve Lock - 10 Degree Steel from PAC Racing Springs is a precision-engineered component designed for high-performance engine builds and competition applications. Valve locks are critical retention devices that hold valve keepers in place, preventing catastrophic valve stem separation under extreme RPM and boost conditions. This product is essential for anyone building a street-strip hybrid, preparing for track days, or assembling a full race engine.

This 10-degree steel variant is engineered for specific valve spring pressures and stem diameters, making it essential to match your exact engine specifications during assembly. The 10-degree angle geometry is designed to work with corresponding valve keepers, creating a secure mechanical grip that resists centrifugal forces and valve spring pressure cycling. The steel construction provides superior durability compared to lesser alternatives, withstanding millions of valve opening cycles without deformation or wear.

The 5/16-inch size indicates the valve stem diameter this lock accommodates—precision tolerances are non-negotiable here, as even slight mismatches compromise seating. PAC Racing Springs manufactures these components to strict OEM and aftermarket racing standards, ensuring consistent geometry and hardness across every unit. This product is ideal for high-performance applications, ensuring reliability and performance in demanding environments.