Replacement Crankshafts & Engine Rotating Assembly Spares

Restore the core power transmission of your engine with high-performance replacement crankshafts. As the primary component responsible for converting linear piston motion into rotational torque, a precision-balanced crankshaft is essential for minimizing engine vibration and ensuring long-term mechanical integrity. BeeSpareParts offers a professional selection of aftermarket crankshafts suitable for heavy-duty industrial engines, providing a reliable replacement for forged steel and ductile iron crankshaft assemblies.

Our extensive inventory is precision-manufactured using advanced induction hardening on all journals to provide superior wear resistance and maximum fatigue strength under high-stress conditions. Every unit undergoes rigorous dynamic balancing and micro-polishing to ensure smooth operation and a perfect fit with main bearings. Whether you are rebuilding an engine for an excavator, a diesel generator, or heavy construction equipment, our durable crankshafts ensure your machinery delivers peak torque and maximum operational uptime on every job site.

Fits for:

• Engine Series: 4BT, 6BT, 6CT, 4D95, 6D102, 6D107, S6K, S4K, 3TNV88, 4TNV94, 4TNV98, D1105, V2203, WP6, WP10, WP12.

• Equipment Models: ZX, PC, SK, EC, EX series excavators, wheel loaders, motor graders, and industrial power units.