The Multiquip 21804 is a genuine OEM Output Shaft 1.50 Dia. x 11.02 HHN designed for Whiteman and International ride-on power trowel models including HHN31V, HHN34TVD, HHXD5, EHHNK5, and HHXDF4-DF5. As a direct OEM replacement, part 21804 meets the original dimensional and material specifications Multiquip engineers built into these machines, ensuring a correct installation without fitment guesswork. DHS Equipment supplies this part direct from Multiquip's authorized parts network, so you're receiving the same component that ships with new equipment. Verify your model against the fitment list above before ordering to confirm this shaft is the right match for your trowel.
Key Features
- OEM-Matched Shaft Dimensions — Manufactured to the original 1.50-inch diameter and 11.02-inch length specification, ensuring correct engagement with mating drive components in the trowel's output assembly.
- Direct Drop-In Replacement — Machined to align with the existing bearing seats, keyways, and housing interfaces on HHN-series trowels, so the shaft installs using standard tooling and procedures.
- Broad HHN-Series Compatibility — Confirmed fitment across HHN31V, HHN34TVD, HHXD5, EHHNK5, and HHXDF4-DF5 Whiteman and International ride-on power trowel models.
- Sustained Blade Drive Performance — A correctly fitted output shaft transfers rotational power smoothly to the trowel blade gearboxes; a worn or damaged shaft causes vibration, uneven blade speed, and accelerated drivetrain wear.
- Genuine Multiquip OEM Part — Sourced through Multiquip's authorized parts network and traceable by part number 21804, giving you full confidence in material grade and dimensional accuracy.
The output shaft transmits rotational force from the trowel's engine or motor through the drivetrain to the blade pitch and rotation gearboxes. In a ride-on power trowel like the HHN series, this shaft is a high-load component that endures continuous torsional stress across long finishing passes on concrete slabs. When the shaft becomes worn, bent, or develops surface damage at the bearing journals, it introduces vibration and inconsistent blade speed that directly compromise the quality of the concrete finish and place additional stress on surrounding drivetrain components.
Part Details
| Part Number | 21804 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Output Shaft 1.50 Dia. x 11.02 HHN |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HHN31V |
| Whiteman Ride-On Power Trowels | HHN34TVD |
| Whiteman Ride-On Power Trowels | HHXD5 |
| International Ride-On Power Trowels | EHHNK5 |
| Whiteman Ride-On Power Trowels | HHXDF4-DF5 |
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.
