Fuel Rail Pressure Relief Valve — High-Pressure Diesel Overpressure Control SKU: QT43712

This fuel rail pressure relief valve protects the high-pressure diesel system by venting excess rail pressure to prevent damage and erratic running. Use it to address hard starts, stalling under load, or surging caused by pressure spikes.

Built for repeated pressure cycles, it helps keep rail pressure steady so injectors and the high-pressure pump operate smoothly. A practical replacement during diagnosis of pressure faults or when refreshing the fuel system.

• Purpose-built valve for common-rail pressure limiting and stabilization
• Helps protect injectors and pump from overpressure events
• Supports cleaner starts and consistent power delivery
• Suitable for routine service, troubleshooting, and post-repair reassembly

Installation Tip: Depressurize the fuel system, clean the rail port, install the valve to the specified torque, then bleed air and verify rail pressure and leaks at warm idle.

A straightforward, dependable fix that helps keep the fuel system stable and your equipment running smoothly.