The Multiquip 20879 Gearbox Assembly (11HP Honda) is a genuine OEM component designed for HDA-Series heavy-duty walk-behind power trowels. As a direct Multiquip OEM part, it is manufactured to the same specifications as the original unit, ensuring correct fitment and full compatibility with the HDA-Series trowel platform. Sourced directly through authorized distribution, this assembly is the correct replacement when the original gearbox shows wear, excessive play, or power transfer issues on your 11HP Honda-powered machine.
Key Features
- Genuine OEM Gearbox Integrity — Manufactured to original Multiquip specifications, ensuring correct gear ratios, bearing tolerances, and housing dimensions specific to the 11HP Honda drivetrain configuration.
- Drop-In Fitment for HDA-Series Trowels — Engineered to bolt directly into HDA-Series walk-behind power trowels, aligning with existing mounting points and drive interfaces without adaptation.
- HDA-Series Compatibility — Confirmed fitment for Multiquip HDA-Series heavy-duty walk-behind concrete trowels equipped with an 11HP Honda engine.
- Restores Full Blade Speed and Power Transfer — A worn or damaged gearbox causes uneven blade rotation, vibration, and loss of finishing control; replacing with part 20879 restores consistent rotor drive performance.
- Complete Assembly — Supplied as a complete gearbox unit, reducing reassembly time and the risk of component mismatch when rebuilding the drive system.
The gearbox assembly on a walk-behind power trowel transfers engine power to the rotor hub, driving the finishing blades at the correct speed and torque to produce a smooth, dense concrete surface. On HDA-Series trowels paired with an 11HP Honda engine, this assembly manages the mechanical load between the engine output shaft and the blade spider, and any wear, cracking, or oil loss in the housing will cause blade speed inconsistency, increased vibration, or complete drive failure. Replacing the gearbox assembly with a genuine Multiquip 20879 unit restores proper rotor engagement and protects the engine and blade components from the additional stress caused by a failing gear set.
Part Details
| Part Number | 20879 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Gearbox Assembly (11HP Honda) |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
