Product Descreiption
1. Specifications
- Part No.: 3964141
- Engine Fitment: Cummins ISLe Series（ISLe4/ISLe‑C/ISLe‑E），also for 6C8.3/ISB6.7/QSL8.9
- Material: High‑strength seamless steel / alloy steel
- Working Pressure: Up to 1600 bar（common rail system）
- Connection Type: Flared / threaded ends，O‑ring sealed
- Position: 1st cylinder high‑pressure fuel pipe（one of the cylinder‑to‑injector lines）
- Size: Custom bent to ISLe engine layout; OD ≈8 mm，ID ≈3 mm
2. Installation Location
- Installed on Cummins ISLe diesel engine（370–420 hp，Euro III‑V）
- Runs between the common rail（fuel rail） and the 1st cylinder fuel injector
- Mounted on the engine cylinder head，secured with clamps; adjacent to other cylinder pipes（3964142/3964143）
- Part of the high‑pressure common rail fuel system
3. Function
- Core Function: Transports high‑pressure diesel from the common rail to the 1st‑cylinder injector
- Pressure Resistance: Withstands extreme injection pressure，ensuring stable fuel delivery
- Precision Fuel Delivery: Maintains consistent pressure/flow for accurate injection timing/volume
- System Safety: Sealed construction prevents leaks; dampens pressure pulses for smooth engine operation
