The Multiquip 21853854INPUT Kit Input Pinion/Hub/Coupler is a genuine OEM assembly designed for Whiteman and International HHN and HHX series ride-on power trowels, including the HHN34TVD, HHN31V, HHXD5, HHXG5, HHXD5-ES, EHHNK5, HHXDF4-DF5, and HHNG5. As a direct Multiquip OEM component, 21853854INPUT delivers the exact tolerances and material specifications required by these machines — no guesswork on fitment. This kit brings together the input pinion, hub, and coupler as a matched set, simplifying service and ensuring all mating components are replaced together for a complete, balanced drivetrain repair.
Key Features
- Genuine OEM Drivetrain Precision — Manufactured to Multiquip's original specifications, ensuring correct gear mesh, load rating, and material hardness for the input drivetrain on HHN and HHX series trowels.
- Complete Three-Piece Kit — Includes the input pinion, hub, and coupler together as a matched assembly, eliminating the risk of mismatched wear between mating components during service.
- Broad HHN and HHX Series Fitment — Confirmed for HHN34TVD, HHN31V, HHXD5, HHXG5, HHXD5-ES, EHHNK5, HHXDF4-DF5, and HHNG5 ride-on power trowels.
- Restores Full Power Transfer — A worn or damaged input pinion, hub, or coupler causes slippage, vibration, and loss of blade drive; replacing all three components together returns full, smooth power transmission to the trowel blades.
- Drop-In Service Replacement — Engineered to the same dimensions as the original assembly, so the kit installs directly into the existing drivetrain housing without modification.
The input pinion, hub, and coupler form the core of the power transfer path between the trowel's engine or motor and its blade gearboxes. The pinion meshes with the drive gear to transmit rotational force, the hub links that rotation to the coupler, and the coupler connects the assembly to the downstream drivetrain. When any one of these components wears, chips, or fractures, the trowel loses blade speed consistency, develops vibration, or stops driving entirely — problems that directly affect finish quality on a concrete slab. Replacing all three as a kit with genuine Multiquip part 21853854INPUT ensures the entire input stage is brought back to specification at once.
Part Details
| Part Number | 21853854INPUT |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Kit Input Pinion/Hub/Coupler |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HHN34TVD |
| Whiteman Ride-On Power Trowels | HHN31V |
| Whiteman Ride-On Power Trowels | HHXD5 |
| Whiteman Ride-On Power Trowels | HHXG5 |
| Whiteman Ride-On Power Trowels | HHXD5-ES |
| International Ride-On Power Trowels | EHHNK5 |
| Whiteman Ride-On Power Trowels | HHXDF4-DF5 |
| Whiteman Ride-On Power Trowels | HHNG5 |
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.
