The Multiquip 20660-001 Seat Frame W/A is a genuine OEM component designed for HTX44 and STX55 series Whiteman ride-on power trowels. This includes fitment for HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 models, making it a direct-fit replacement with no guesswork on compatibility. As an OEM part, it is manufactured to the same standards as the original, ensuring proper mounting alignment and structural integrity. Order with confidence knowing this is the correct seat frame for your machine.
Key Features
- Genuine OEM Construction — Manufactured to original equipment specification, delivering the same structural strength and mounting geometry as the factory-installed seat frame.
- Direct-Fit Replacement — Engineered to bolt into existing mounting points on HTX44 and STX55 series trowels without modification to the frame or hardware.
- Broad Series Fitment — Verified compatibility across HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 Whiteman ride-on power trowels.
- Operator Support Integrity — A sound seat frame keeps the operator securely positioned, which directly affects machine control, steering responsiveness, and blade adjustment during finishing passes.
- Operator Safety Relevance — A compromised or cracked seat frame on a ride-on trowel creates instability for the operator at the controls — replacing it promptly with a correct OEM unit restores safe operating posture.
The seat frame on a ride-on power trowel serves as the structural base that supports the operator's seat and connects it securely to the machine chassis. It must withstand constant vibration, operator load, and the mechanical stress of working on uneven concrete surfaces. When a seat frame cracks, bends, or loses its mounting integrity, it compromises operator comfort and control — and on a machine where precise blade pressure and steering input matter, that directly affects the quality of the finished concrete surface.
Part Details
| Part Number | 20660 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Seat Frame W/A |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | STX55Y6 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
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.
