SKU: MAN13160-8
UPC: 807298071091
MPN: 13160-8
The MANLEY 10 Degree Bead Loc Valve Locks are precision-engineered steel locks designed for high-performance engine builds where valve control and reliability are non-negotiable. These locks feature a 10-degree angle geometry optimized for modern cylinder head designs, accommodate 0.342-inch valve stems, and deliver 0.050 inches less height compared to standard designs—a critical advantage in tight engine configurations where rocker geometry and clearance margins directly impact performance and longevity.
Manufactured from hardened steel with black oxide finish, these valve locks resist corrosion and wear under sustained high-RPM and high-temperature operation. The reduced height specification allows builders to maximize valve spring pressure and preload without interference—essential when targeting maximum lift and duration in competition or performance applications. Each set includes eight locks, covering a full set of eight cylinders. The precision bead locking design ensures positive valve stem engagement and prevents rotational slippage during aggressive valve events, maintaining consistent rocker arm geometry across the engine cycle.
These locks are essential for serious engine builders, performance machine shops, and racing engine assembly work. Whether building a street performance engine, a weekend track car, or a full-competition platform, proper valve lock selection directly affects reliability, valve float resistance, and overall powerplant durability. MANLEY's reputation in the high-performance engine component space reflects decades of development in motorsports applications where failure is not an option.
When sourcing valve locks for a build, the 10-degree angle and height specification must match your specific cylinder head design and valve train geometry. MANLEY's product engineering ensures these locks integrate seamlessly with their complete valve train systems and with compatible aftermarket configurations. Verify fitment with your cylinder head supplier or engine builder before installation.
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