Forklift Reducer Assembly 15803-50001 – HELI CPCD50-100 TCM FD80

Forklift Reducer Assembly 15803-50001 — HELI CPCD50-100, TCM FD80-100Z8

This reducer assembly (part number 15803-50001, FLS# DE00-003A) is the main gear reduction unit in the forklift drive axle, reducing motor or engine speed while multiplying torque for HELI H2000 K-series CPCD80-100, H2000 CPCD50-70-C10, and TCM FD80-100Z8 forklifts. The reducer contains the primary reduction gear set — pinion and ring gear — that provides the first stage of torque multiplication before the differential distributes power to the axle shafts. Without it, the engine or drive motor would need to produce 5-8x more torque to move a loaded 5-10 ton forklift, requiring an impossibly large and heavy motor.

This Kingstream reducer is manufactured in Shandong, China with a 6-month warranty. New condition, applicable to both HELI and TCM forklift brands. Transmission parts category. The reducer assembly is a complete bolt-in unit — it replaces a worn or damaged original reducer with OEM-equivalent gear ratios and mounting dimensions. Always check the gear oil level and condition in the axle housing when replacing the reducer — metal debris from a failed reducer contaminates the entire axle oil and must be flushed before installing the new assembly.

Compatible with HELI H2000 K-series CPCD80-100, HELI H2000 CPCD50-70-C10, and TCM FD80-100Z8 forklifts. Browse our reducer gear selection for other drive axle components.

Technical Specifications

Compatible Models

Flush axle oil during installation. Confirm your forklift model and FLS number →