C5258351 XCMG GR2605 motor grader intake air heater

Technical Parameters

• Model: C5258351 (5258351)
• Brand: DCEC Cummins
• Type: Grid-type electric intake heater
• Fit: Cummins ISDE4.5, ISDE6.7, QSB4.5, QSB6.7
• Voltage: 24V DC
• Power: Approx. 1500W
• Heating Element: Nickel-chromium alloy grid, ceramic coating (1350°C resistant)
• Housing: Die-cast aluminum (light, corrosion-resistant)
• Preheat Time: 15–60 seconds (temperature dependent)
• Current: 8–15A
• Resistance: 0.2–0.5Ω @25°C (normal)
• Temp Range: -40°C to 120°C
• Mount: 2–4 bolts on intake manifold
• Cross: 4941309 (interchangeable)

Application Scenarios

• Dongfeng Kinland, Tianjin, Dali Shen trucks (ISDE 4.5/6.7L)
• 18–26 ton loaders, graders, bulldozers (Cummins QSB)
• Mining, oilfield, generator sets
• Cold high-altitude regions
• Winter outdoor use, frequent cycling

  Replaces 4941309; for intake air heating (not glow plugs).

Common Faults & Troubleshooting

1. No Heat, Hard Start

• Cause: Blown fuse, bad relay, open circuit, burned grid
• Fix: Check 24V fuse; test voltage; measure resistance (0.2–0.5Ω OK); replace C5258351 if faulty.

2. Slow Heat, Long Crank

• Cause: Low voltage, corroded terminals, carbon buildup
• Fix: Clean connections; check battery/charging; clean intake; replace heater if needed.

3. Constant Heating, Battery Drain, Poor Power

• Cause: Stuck relay, ECU fault, temp sensor failure
• Fix: Verify no continuous heat; replace relay; diagnose ECU codes.

4. Leaks, Noise, Unstable Idle

• Cause: Worn gasket, loose bolts, cracked housing
• Fix: Replace gasket; torque correctly; replace if cracked.

5. Corrosion, Short Circuit

• Cause: Moisture, oil, salt corrosion
• Fix: Clean/dry; check insulation; replace C5258351 if damaged.