The Multiquip 12590 CV-Joint Comet Clutch Coupler is a genuine OEM component designed for Whiteman mechanical ride-on power trowels including the HTN27K, HTN28K, HHN31V, HHN34TVD, and JWN24HTCSL/HSCSL. As a direct-sourced OEM part, the 12590 matches the original manufacturer specification exactly, ensuring a correct installation with no guesswork on fitment. This coupler plays a critical role in transmitting power through the drivetrain, and replacing a worn unit with the genuine Multiquip part keeps your trowel performing as intended. DHS Equipment supplies this part direct so you can get your machine back on the slab fast.
Key Features
- Genuine OEM Torque Transfer Integrity — Manufactured to the same specification as the original coupler, ensuring consistent torque transmission through the Comet clutch assembly without slippage or misalignment.
- Direct-Fit Replacement — Engineered to install in the same position and mounting configuration as the factory unit, making swap-out straightforward on compatible Whiteman ride-on trowels.
- Confirmed Fitment — Verified for HTN27K, HTN28K, HHN31V, HHN34TVD, and JWN24HTCSL/HSCSL mechanical ride-on power trowels.
- Drivetrain Continuity — A damaged or worn CV-joint coupler causes vibration, erratic blade engagement, and accelerated wear on adjacent drivetrain components; replacing it promptly protects the broader clutch assembly.
- Verified Part Number — Order with confidence using Multiquip part number 12590 to confirm you are receiving the correct component for your machine.
The CV-joint coupler connects the Comet clutch to the trowel's drivetrain, transferring rotational power while accommodating slight angular movement between components. The constant-velocity joint design allows smooth, consistent power delivery even when drivetrain components are not in perfect linear alignment. When this coupler wears or fails, operators typically notice vibration, rough clutch engagement, or a loss of smooth blade rotation — all of which affect finish quality and can accelerate damage to surrounding components if left unaddressed.
Part Details
| Part Number | 12590 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | CV-Joint Comet Clutch Coupler |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTN27K |
| Whiteman Ride-On Power Trowels | HTN28K |
| Whiteman Ride-On Power Trowels | HHN31V |
| Whiteman Ride-On Power Trowels | HHN34TVD |
| Whiteman Ride-On Power Trowels | JWN24HTCSL/HSCSL |
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.
