Ferrea Valve Locks for Subaru 6mm Radial Groove Steel Set of 16

Ferrea Valve Locks for Subaru — 6mm Radial Groove Steel (Set of 16) Precision-engineered valve locks from Ferrea, designed for Subaru engines that require 6mm radial groove retainers. This set of 16 steel locks delivers reliable retention, consistent performance, and long service life for performance builds and OEM replacements. Key Features Exact fit: 6mm radial groove profile for direct fitment to compatible Subaru valve stems. Durable construction: Heat-treated steel resists wear and maintains clamping force under high RPM and thermal stress. Set of 16: Supplies locks for four cylinders (dual locks per valve) — ideal for full head reassembly. Consistent performance: Tight manufacturing tolerances ensure even seating and minimize valve float risk. Applications & Benefits Perfect for engine rebuilds, cam swaps, or performance upgrades on Subaru engines using 6mm radial groove retainers. Using Ferrea valve locks helps maintain valvetrain stability, improves reliability at high RPM, and ensures proper valve spring retention for optimum engine safety and longevity. Why choose Ferrea: Renowned in motorsports and engine building, Ferrea components combine precision engineering and rugged materials for trusted track and street performance.