Cummins ISB 6.7L High Pressure Fuel Rail 2022-2025: OEM 5566376

Precision Fuel Delivery for Cummins ISB 6.7L Engines

What Is It?

The High Pressure Fuel Rail OEM 5566376 is a factory-designed component that distributes fuel to the injectors at regulated high pressure in Cummins ISB 6.7L engines from model years 2022 to 2025. It is a critical part of the common rail fuel system, ensuring consistent fuel delivery for efficient combustion and proper engine function.

Why Choose OEM 5566376?

Built to Cummins’ original specifications, this fuel rail ensures proper fit and pressure control within the fuel system. It’s engineered for seamless integration with OEM sensors and lines, helping to reduce leak risks, maintain injector timing, and support emissions compliance.

Key Benefits

✅ OEM-Grade Fit for 2022–2025 ISB 6.7L Engines
✅ Consistent Fuel Pressure Regulation
✅ Machined for Leak-Free Injector Port Connections
✅ Sensor and Line Compatible
✅ Supports Efficient Combustion and Emissions Control

Applications

This fuel rail is used in a wide range of commercial vehicles and equipment powered by Cummins ISB 6.7L engines, including medium-duty trucks, vocational fleets, buses, and utility vehicles. It is essential for vehicles operating under EPA and CARB regulations.

Installation Notes

Installation must be performed by a certified technician. Always replace the fuel rail with new seals and inspect injector connections and fuel lines for damage or wear. After installation, the fuel system should be primed, and leak testing must be conducted. Calibration or sensor relearn may be required via diagnostic tools.

Final Thoughts

The OEM 5566376 high pressure fuel rail is a vital part of the fuel delivery system in Cummins ISB 6.7L engines. With its precise construction and system compatibility, it supports clean combustion, system reliability, and long-term engine health.