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Boundary VHR shim kit for Nissan VQ engines includes three shims sized for 10, 20 and 30 PSI calibration steps. The compact kit is intended for VQ applications and provides a simple way to modify valve‑related pressure characteristics in systems that accept shim adjustments. It supplies three discrete shim options in a single package for tunable pressure increments.
Boundary Nissan VQ (All Types) VHR Shim Kit (10/20/30 PSI) - 3 Shims
