5/16 Valve Locks - 7 Degree Radius Groove

The 5/16 Valve Locks - 7 Degree Radius Groove by PAC Racing Springs are precision-engineered components tailored for high-performance engine builders and racing enthusiasts. These valve locks are essential for securing the valve stem to the retainer, ensuring reliability under extreme valve train conditions.

Constructed from hardened steel with a black oxide finish, these valve locks feature a 7-degree radius groove that allows for smooth installation and removal while ensuring positive engagement with the valve stem. This design helps distribute load evenly across the contact surfaces, reducing stress concentration and extending the life of the components.

Ideal for serious competition and performance applications, this set of 16 locks is compatible with most competition cylinder heads and high-flow valve combinations. Engine builders working with oversized valves or modified cylinder heads will find these valve locks critical for maintaining consistent valve train geometry and preventing catastrophic engine failure.