Manley 13031-16 Super 7 Degree Captive-Loc Valve Locks Steel .3415" Stem

The Manley 13031-16 valve locks are precision-machined steel valve keepers designed for high-performance engine applications. These Super 7 degree Captive-Loc valve locks maintain superior clamping properties while featuring increased lock thickness to overcome extrusion problems common in traditional 7 degree locks.

Key Features:

• Premium heat-treated steel construction for maximum strength and durability
• Super 7 degree lock angle provides excellent clamping force on valve retainers
• Captive-Loc design encapsulates hard tips in titanium valves if they come loose
• Machined to exacting tolerances for precise fit with valves and retainers
• Designed for use with valve tip lengths from .290" to .330"
• Fits .3415" diameter valve stems (11/32" conventional groove)
• Sold as a complete set of 16 locks (enough for 8 valves)

Manufactured from premium quality heat-treated steel, these Manley valve locks provide the reliable performance demanded by racing and high-performance street applications. The increased thickness design prevents lock extrusion under high spring pressures and extreme RPM conditions, while the captive-loc feature adds an extra layer of security for peace of mind during aggressive operation.