The Multiquip 12051 Hydraulic Motor Eaton 109-1339 40MM is a genuine OEM component designed for HTH-Series hydrostatic ride-on trowels. This is a direct OEM replacement sourced from Multiquip, ensuring the motor meets the original engineering specifications for the HTH-Series platform. Confirmed fitment for HTH-Series machines means no guesswork when ordering — 12051 is the correct part for these hydrostatic units. Keep your trowel running at full capacity with the right motor installed.
Key Features
- Genuine OEM Hydraulic Performance — Eaton 109-1339 motor spec maintained exactly as designed, delivering the correct displacement and torque output for HTH-Series hydrostatic blade and drive circuits.
- Direct-Mount Compatibility — 40MM shaft interface matches the original hydraulic circuit connections on HTH-Series trowels, allowing a straightforward swap without machining or adapters.
- HTH-Series Fitment Confirmed — Verified for Multiquip HTH-Series hydrostatic ride-on trowels; use part number 12051 to confirm accuracy when ordering.
- Sustained Blade Control — A functioning hydraulic motor is what translates hydraulic pressure into precise blade pitch and drive movement; a worn or failing motor results in sluggish response, uneven blade control, and loss of finishing quality.
- Hydraulic System Integrity — Installing the correct OEM motor prevents pressure imbalances in the closed hydraulic circuit, protecting pumps, valves, and seals from premature wear caused by a mismatched unit.
The hydraulic motor on an HTH-Series ride-on trowel converts hydraulic pressure generated by the machine's engine-driven pump into rotational force, which drives the trowel blade pitch adjustment and propulsion systems. On a hydrostatic trowel, this motor is at the heart of smooth, variable-speed blade and drive control — operators depend on it for consistent finishing passes across large concrete slabs. When the motor wears out or develops internal leakage, the machine loses hydraulic responsiveness, blade adjustment becomes erratic, and drive performance degrades, making it impossible to maintain the even pressure needed for quality concrete finishing.
Part Details
| Part Number | 12051 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hydraulic Motor Eaton 109-1339 40MM |
Compatibility & Fitment
| Name | Model |
|---|---|
| Hydrostatic Ride-On Trowels | HTH-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.
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