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Boundary Nissan VQ / VHR Series Oil Pump Relief Valve Shim Kit (10/20/30 PSI) - 3 Shims

$25.00

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Boundary Nissan VQ / VHR Series Oil Pump Relief Valve Shim Kit (10/20/30 PSI) - 3 Shims

$25.00

$25.00

Fits Nissan VQ-series engines including VQ35DE, VQ35HR, and VQ37VHR.

This Boundary oil pump relief valve shim kit allows for precise adjustment of your engine's oil pressure. By increasing the preload on the oil pump's internal bypass spring, these shims raise the pressure at which the relief valve opens, ensuring adequate lubrication for high-RPM operation or forced induction applications. The kit provides a modular approach to tuning your oiling system, allowing you to achieve the target PSI required for your specific build tolerances.

  • Increments: Provides 10 PSI, 20 PSI, or 30 PSI increases based on shim selection
  • Quantity: 3 precision-machined shims included
  • Function: Increases spring tension in the factory oil pump relief valve
  • Engine Compatibility: All Nissan VQ and VHR variants
  • Manufacturer Part Number: VQ-SH-K

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