Super 7 Valve Locks

The MANLEY Super 7 Valve Locks are precision-engineered components designed for high-performance engine builds where valve control and longevity under extreme conditions are non-negotiable. This set of 16 valve locks features a 7-degree geometry optimized for 0.311-inch valve stems at standard height, manufactured from hardened steel with black oxide coating for corrosion resistance and durability in demanding engine environments.

The 7-degree lock angle is critical for maintaining proper valve spring pressure retention while allowing smooth valve train operation across high RPM ranges. Black oxide finish provides a protective layer against oxidation and wear, extending component life in both naturally aspirated and forced-induction applications. The standard height configuration ensures compatibility with common valve spring and retainer combinations without requiring spacers or modifications that could compromise valve seat contact.

These valve locks address the needs of engine builders, performance shops, and enthusiasts developing competition engines, street performance builds, or stock replacement applications where OEM valve control is insufficient. The 16-piece set provides a complete solution for one engine or spare inventory for multiple builds. Proper valve lock selection is essential for preventing valve spring collapse, maintaining correct valve timing, and avoiding catastrophic valve train failure during high-load operation.

MANLEY is recognized in the performance engine market for manufacturing precision valve train components to exacting tolerances. Valve lock geometry, material hardness, and coating integrity directly impact engine reliability—especially in turbocharged, supercharged, or high-rev naturally aspirated engines where valve spring pressures exceed factory specifications. These Super 7 locks are engineered to maintain consistent performance across thousands of thermal and mechanical cycles.