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Mercedes-Benz Crankshaft 4420300801 – OEM Quality Replacement for OM442 / OM442A / OM442LA Engines
The Mercedes-Benz 4420300801 Crankshaft is a forged steel component for OM442, OM442A, and OM442LA V8 diesel engines, featuring 103.98 mm main journals and 89.98 mm crankpins for superior balance, high-torque handling (up to 2000 Nm), and durability in heavy-duty NG series trucks, O 303 buses, and Actros models.
Product Details
Key Parameters
| Parameter | Details |
|---|---|
| OE Number | 4420300801 (A4420300801) |
| Compatible Engine Models | Mercedes-Benz OM442, OM442A, OM442LA (Euro 1/2) |
| Compatible Vehicle Models | Mercedes-Benz NG series trucks, O 303 buses, Actros MP1 (1990s-2000s) |
| Material | Forged Steel |
| Dimensions | Main Journal: 103.98 mm; Crankpin: 89.98 mm; Length: ~1200 mm |
| Warranty | 1-Year Volgen Power Standard |
| MOQ | 1 piece |
| Net Weight | 100 kg |
Cross Reference
Equivalent Part Numbers:
- 4420300801
- A4420300801
- 4420300401
- 4420300901
- 4420303701
Features & Advantages
- Forged Steel Construction: Engineered for heavy-load operation in V8 diesel engines, providing superior fatigue resistance and longevity under high torque.
- Precision Balanced Journals: Heat-treated with 0.01mm tolerance for perfect bearing fit, reducing vibration and extending main/rod bearing life.
- OEM Machined Design: Balanced to Mercedes-Benz specs for seamless integration, minimizing noise and power loss in NG and O 303 applications.
- Versatile Application: Suitable for construction, mining, and bus operations, ensuring reliable performance in Euro 1/2 era trucks.
Common Faults & Replacement Signals
- Crank Knock or Vibration: Worn journals cause knocking during acceleration—replace if runout exceeds 0.02mm.
- Oil Pressure Loss: Scored crankpins lead to lubrication failure; check for low pressure or metal in the oil filter.
- Power Drop or Misfires: Imbalance results in uneven firing; monitor for 5-10% torque loss or increased fuel consumption.
- Bearing Failure: High-mileage operation without timely replacement causes seizing; inspect during 300,000 km service.
Installation Notes
- Preparation: Drain oil and remove flywheel/torque converter; measure journal runout with dial indicator (max 0.02mm).
- Alignment: Clean mains and install new bearings, torque main caps to 200 Nm + 90° (consult manual).
- Lubrication: Apply assembly lube to journals; ensure 89.98 mm crankpins align with rods.
- Testing: Reassemble, prime the oil system, and run at idle; monitor vibration for 10 minutes.
- Pro Tip: Use OEM-grade thrust washers and a calibrated torque wrench to avoid imbalance; balance the assembly if modified.
Packaging & Shipping
- Packaging: Sealed in anti-corrosion wrap with protective cradle, boxed for safe transit.
- Shipping Image: It comes in a box with the Volgen Power branding, a wooden stand, and a label that shows the OE number 4420300801.
- Delivery: Worldwide free shipping on orders over $50; 3-7 days to most locations from the China warehouse.
Ready to Order? Get a Quote Today! Website: www.volgenpower.com Email: [email protected] 24/7 Support: +86 18827435225
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