Multiquip 20407 Gearbox Assembly 2" BA - OEM Replacement Part

This gearbox assembly is a critical drivetrain component for walk-behind power trowels, transmitting power from the engine to the spider assembly that rotates the trowel blades during concrete finishing operations. The 2" BA configuration is engineered to handle the torque and RPM requirements of both floating and finishing applications on commercial concrete surfaces.

Gearbox assemblies require regular maintenance to ensure reliable operation. According to Multiquip service specifications, these units should be filled with Chevron Cetus Hipersyn 460 (MQ Part #20111) or equivalent, with typical capacity ranging from 22-24 oz depending on the specific trowel model. Regular oil level checks using the sight glass and scheduled oil changes are essential to prevent premature wear and bearing failure. Common symptoms of gearbox failure include unusual noise during operation, excessive vibration, oil leakage, or loss of blade rotation speed.

This gearbox assembly is compatible with the following Multiquip walk-behind power trowel models:

• B46
• BH90C
• J36
• JH55C
• PRO36

Genuine Multiquip OEM part, sold by an authorized dealer.