The Multiquip 12765 Heavy Duty Rider Gearbox 1-1/4 Shaft is a genuine OEM component designed for HTN27K, HTN28K, and HTNS5S-2 ride-on power trowels. As a direct OEM replacement, part 12765 meets the same design and dimensional standards as the original unit, ensuring the gearbox seats and connects correctly within the trowel's drive system. This is the same part supplied through Multiquip's authorized distribution network, giving you confidence in fitment before the part even arrives on site. If you're servicing a Whiteman or international-spec ride-on trowel in the HTN series, 12765 is the correct OEM gearbox to order.
Key Features
- OEM-Grade Gear Tolerancing — Manufactured to the original dimensional spec, so gear mesh, backlash, and load transfer characteristics match what left the factory.
- 1-1/4 Inch Output Shaft — The 1-1/4 inch shaft diameter ensures correct engagement with the trowel arm drive components without modification to the surrounding hardware.
- Confirmed Fitment for HTN Series Trowels — Verified for HTN27K, HTN28K, and HTNS5S-2 ride-on power trowels, covering both domestic Whiteman and international-spec configurations.
- Sustains Blade Speed and Float Quality — A sound gearbox delivers consistent torque to the trowel arms; a worn or failed unit causes uneven blade rotation, vibration, and loss of surface finish control.
- Genuine Multiquip OEM Part — Sourced directly through Multiquip's authorized parts network under part number 12765, not a generic substitute.
The gearbox on a ride-on power trowel transfers engine or motor torque to the individual trowel arm assemblies, controlling blade speed and the consistency of force applied to the concrete surface. On HTN-series machines, the heavy duty rider gearbox must handle the continuous load demands of finish troweling across large slabs, where any loss of rotational consistency shows immediately in the surface quality. When the gearbox wears or fails, operators will notice increased vibration, uneven blade rotation, or a complete loss of drive to one or more trowel arms — all of which compromise the finished slab and can force a costly stop mid-pour.
Part Details
| Part Number | 12765 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Heavy Duty Rider Gearbox 1-1/4 Shaft |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTN27K |
| Whiteman Ride-On Power Trowels | HTN28K |
| International Ride-On Power Trowels | HTNS5S-2 |
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.
