C5313439 XCMG GR2605 motor grader fuel inlet pipe

Technical Parameters

• Part No.：C5313439 (5313439)
• Brand：Cummins (CCEC) Genuine
• Type：High-pressure fuel line (hard tube)
• Material：20# seamless steel, zinc-phosphated interior
• Tube Size：Φ8mm × 1.5mm wall
• Pressure Rating：0–25 MPa
• Temp Range：-40℃ to +150℃
• Length：Approx. 450–500mm
• Connections：Flare (M18×1.5) + flange/quick connector
• Seal：Flare cone + FKM O-ring
• Surface：Black electrophoretic coating
• Cross Reference：C3069103, C3165735, C4913949

Application

Fit Engines

• Cummins NT855-C280/C360
• Cummins K19, KTA19, QSK19
• Cummins K38, KTA38, QSK38
• Cummins K50, KTA50, QSK50

Fit Equipment

• Construction：Large excavators, loaders, mining trucks
• Generators：200–1500kW Cummins generator sets
• Marine：K19-M, K50-M main propulsion engines
• Oil：Drilling, fracturing, workover rigs

Mounting Locations

• Fuel filter → PT pump inlet
• Fuel pump → common rail/injector manifold
• Water separator → main engine inlet
• High-pressure fuel supply for high-power engines

Common Faults & Troubleshooting

1. Fuel Leakage

• Cause：Loose joints, cracked flare, worn O-ring
• Fix：Replace C5313439; torque 40–50N·m; new O-ring
• Action：Use genuine tube for reliable sealing

2. Tube Breakage

• Cause：Vibration fatigue, loose clamps, impact
• Fix：Install C5313439 OEM tube; add clamps; avoid vibration
• Action：Secure mounting; inspect regularly

3. Restricted Flow

• Cause：Internal rust, crushed tube, debris
• Fix：Replace C5313439; clean fuel system; change filters
• Action：Ensure clean fuel; periodic replacement

4. Corroded Connectors

• Cause：Moisture, poor plating
• Fix：Use C5313439 genuine; apply anti-seize
• Action：Prevent rust; maintain connections