10 Degree Valve Locks - 7mm Bead Loc

The MANLEY 10 Degree Valve Locks - 7mm Bead Loc (SKU: MAN13170-8) are precision-engineered valve locking components designed for high-performance engine builds where reliability and consistent valve train geometry are non-negotiable. These locks secure the valve stem within the cylinder head, preventing unwanted axial movement during extreme operating conditions. Whether you're assembling a racing engine, performance street build, or rebuilding a high-revving application, valve locks are critical safety components that maintain proper valve seating and prevent catastrophic engine failure.

Manufactured from hardened steel with black oxide finish, the 10 Degree Valve Locks feature a 7mm bead diameter optimized for standard-height valve stems and designed to work with corresponding valve keepers and springs. The 10-degree angle geometry ensures precise engagement with the valve keeper groove, distributing load evenly and reducing stress concentration at the critical valve stem interface. The black oxide coating provides corrosion resistance and durability in engine environments subject to heat cycling and chemical exposure. This set contains eight individual locks, sufficient for a complete four-cylinder engine or partial eight-cylinder builds.

These valve locks are essential for engine builders and technicians who demand OEM or performance-grade components for valve train assembly. Compatibility depends on matching the 10-degree angle, 7mm bead specification, and standard-height valve stem dimensions to your specific cylinder head and valve spring combination. Proper installation requires careful alignment during assembly to prevent lock slippage and valve stem damage. Precision fitting and correct keeper engagement are mandatory for reliable engine operation at elevated RPM and boost levels.