Description
This is a direct‑fit replacement final drive (travel motor + gearbox) for Komatsu PC128UU‑1, part number 21Y‑60‑12101 (also written 21Y6012101). It comes as a complete assembly designed to restore tracking power and reliability with minimal downtime. Built for excavator duty cycles, the unit delivers smooth torque to the track under heavy loads and frequent starts/stops. Typical applications include construction and municipal jobs where stable travel speed and low noise matter. If your machine shows weak tracking, abnormal noise, or oil leakage at the hub, replacing the final drive as a complete assembly is the fastest, most dependable fix.
Fitment: Komatsu PC128UU‑1 excavator.
What’s included: Complete hydraulic final drive motor with integrated gearbox (ready to install; lines and sprocket reused from machine).
Why Choose Us
We supply genuine and premium-quality replacement parts for Caterpillar, Perkins, and Komatsu engines, along with other heavy equipment parts. With competitive pricing, fast shipping, and reliable after-sales support, we are your trusted partner for keeping your machines running at peak performance
Part No.: 21Y‑60‑12101 / 21Y6012101
Machine: Komatsu PC128UU‑1
Assembly: Final drive with travel motor (complete)
Approx. Weight: ~309–366 lb
Common Names: travel motor, track drive motor, propulsion motor, final drive gearbox