The Multiquip 12586 Gearbox Input Shaft With Fan is a genuine OEM component designed for HTN series ride-on power trowels and the RX1575 roller. Sourced directly from Multiquip, part 12586 is manufactured to the same specification as the original, ensuring a correct, direct installation without guesswork. This shaft is confirmed to fit HTN models across Kohler, Onan, and Honda engine configurations, making it a versatile service part for mixed fleets running HTN equipment.
Key Features
- Genuine OEM Construction — Machined to the exact dimensional tolerances of the original shaft, maintaining proper gear mesh alignment and input torque transfer through the gearbox.
- Integrated Cooling Fan — The fan built onto the shaft provides active airflow to the gearbox during operation, helping maintain safe operating temperatures under sustained load.
- Direct Drop-In Replacement — Matches the original mounting interface and spline configuration, allowing straightforward installation without machining or adapters.
- Broad HTN Engine Compatibility — Confirmed fitment across HTN models equipped with Kohler, Onan, and Honda engines, as well as the RX1575 roller.
- Drivetrain Integrity — A worn or damaged input shaft causes vibration, inconsistent blade speed, and accelerated gearbox wear; replacing with a genuine part restores full drivetrain function.
The gearbox input shaft is the primary rotating component that transfers engine power into the trowel or roller gearbox. On ride-on trowels like the HTN series, this shaft drives the gear train that controls blade speed and pitch, making its condition critical to finish quality and operator control. The integrated fan draws cooling air across the gearbox housing during operation; if the shaft is damaged or the fan vanes are broken, heat builds up rapidly and can cause premature gearbox failure.
For help confirming fitment or to place an order, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 12586 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Gearbox Input Shaft With Fan |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTN-KHOLER/ONAN/HONDA |
| Rollers | RX1575 |
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.
