Illustrative photo — the delivered item may differ in appearance. Orders are fulfilled by catalog part number (SKU).
Crankshaft Cummins 3918986 | 3917320, 3917443, 3905625, J918986, 851011745
Restore your engine’s core power and reliability with this heavy-duty forged crankshaft, precision-engineered for Cummins 6CT 8.3L engines. Built to withstand extreme operating conditions, it ensures smooth rotation and long-lasting durability.
Description
High-Performance Forged Crankshaft for Cummins 6CT 8.3L Engines
The crankshaft is the backbone of your heavy-duty diesel engine. This premium replacement crankshaft (part number 3918986) is engineered specifically for Cummins 6CT 8.3L engines to restore optimal performance, reduce vibration, and extend engine life. Manufactured from high-strength forged steel, it is built to endure the extreme pressures and temperatures of demanding industrial, agricultural, and commercial applications.
Precision Engineering & Specifications
Designed to meet or exceed strict industry standards, this crankshaft features precision-ground journals to ensure perfect oil clearance and minimize wear on your main and connecting rod bearings.
- Engine Compatibility: Cummins 6CT 8.3, 6CTA 8.3, 6CTAA 8.3, ISC, QSC 8.3
- Material: Forged Steel for maximum fatigue resistance
- Connecting Rod Journal (Czop korbowy): 75.961 mm – 76.012 mm
- Main Journal (Czop główny): 97.963 mm – 98.014 mm
Key Benefits
- Superior Durability: Forged construction provides significantly higher tensile strength and fatigue resistance compared to cast alternatives.
- Perfect Fitment: Direct replacement for part number 3918986 and its associated cross-references, ensuring a hassle-free installation.
- Smooth Operation: Dynamically balanced to eliminate engine vibrations, protecting your engine block and internal components from premature wear.
