Vavle Lock 1pk 10-Degree 8mm Steel -.050

The Valve Lock 1pk 10-Degree 8mm Steel -.050 from PAC Racing Springs is a precision-engineered component designed for high-performance engine builders and serious enthusiasts who demand reliability in extreme valve train conditions. Valve locks are critical fasteners that secure valve keepers to the valve stem, preventing catastrophic valve drop during high-RPM operation.

Constructed from hardened steel, this valve lock features a 10-degree included angle geometry optimized for compatibility with modern valve keeper designs and OEM-style retainers. The 8mm bore accommodates standard valve stem diameters, while the -.050 tolerance grade ensures positive engagement without excess clearance that could cause keeper rattle or valve stem wear.

PAC Racing Springs manufactures these locks to exacting specifications, ensuring consistent geometry across the entire production run—critical when you're assembling multiple cylinder heads and need uniform valve spring pressures and geometry throughout the engine. The single-pack format makes this ideal for replacement locks, repairs, or selective component upgrades on existing builds.