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The Cummins 4H crankshaft OEM 3907803 is a forged steel replacement for 3.9L diesel engines. Precision-machined journals and nitrided surfaces ensure OEM-level durability and fatigue resistance. Widely used in excavators, trucks, gensets, and agricultural machinery, this crankshaft is trusted by distributors and rebuilders worldwide.
| Specification | Details |
|---|---|
| Category | Crankshaft |
| Compatible Engine Family | Cummins 4H / 4B / 4BT / 4BTA (3.9L) |
| OEM Numbers | 3907803, 3929036, 3908031, 3916190 |
| Material | Forged Steel, fillet rolled & nitrided |
| Weight | ≈42 kg |
| Stroke | 120 mm |
| Main Journal Diameter | 83.0 mm |
| Crankpin Diameter | 69.0 mm |
| Key Features | • Precision balanced • Nitrided journals • OEM geometry |
| Engine Model | Application | Typical Equipment | Replaces OEM |
|---|---|---|---|
| Cummins 4BT / 4BTA 3.9L | Construction Machinery | Komatsu PC60/PC75, Case 580, Hyundai R80 | 3907803 |
| Cummins 4BT 3.9L | Industrial / Gensets | FG Wilson, Olympian, Cummins Power Units | 3929036 |
| Cummins 4B / 4BT | Trucks & Vans | Isuzu NPR, Fuso Canter, Step Vans | 3908031 |
| Cummins 4B / 4BT | Agricultural / Marine | Tractors, Pumps, Small Boats | 3916190 |
Ruich Value ensures every crankshaft meets international standards, minimizing downtime and maximizing reliability for heavy-duty diesel applications.
We also supply Cummins 4BT, 6BT, 6CT, M11, NT855, and K19/KTA19 crankshafts.
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For wholesale inquiries or technical support, please contact us:
Email [email protected] or
WhatsApp +86 13889277673.
Our sales team responds promptly to distributor and fleet requests.
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