Yanmar 172153-73300 Travel Gearbox Motor Assembly

The Yanmar 172153-73300 is a complete hydraulic final drive assembly integrating a planetary gearbox with a two-speed hydraulic track motor. Designed as a direct replacement for Yanmar 3-ton class mini excavators, this unit transmits hydraulic power into rotational torque for crawler propulsion. The assembly features a 210 mm sprocket inner diameter and flange mounting interface. It serves as the primary travel drive for the left and right track systems. The unit is supplied as a new aftermarket component ready for installation, replacing OEM part numbers 172153-73300 and 172458-73700. Cross-references include part number variations 17215373300, YM172153-73300, and YM17215373300.