The Multiquip 20660 Seat Frame W/A is a genuine OEM component designed for HTX44 and STX55 series hydrostatic ride-on power trowels. As a direct OEM replacement sourced through Multiquip's authorized parts network, part 20660 is built to the same specifications as the original, ensuring a correct, hassle-free installation on compatible machines. This seat frame is confirmed to fit the HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 models. When you need a structurally sound operator seat frame to keep your trowel running safely and comfortably, the 20660 is the right part for the job.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original structural specifications, ensuring the seat frame maintains the correct mounting geometry and load-bearing integrity required for ride-on trowel operation.
- Direct Bolt-On Replacement — Engineered to match the original mounting points on HTX and STX series trowels, so the frame aligns and installs cleanly without modification.
- Broad HTX/STX Series Fitment — Confirmed compatible with HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 hydrostatic ride-on power trowels.
- Operator Support Integrity — A sound seat frame keeps the operator securely positioned during troweling passes; a cracked or deformed frame compromises control and comfort on long finishing runs.
- Operator Safety Relevance — The seat frame is a load-bearing structural component directly supporting the operator — using a correctly rated OEM replacement is essential for maintaining safe operating conditions on ride-on equipment.
The seat frame assembly is the structural foundation that mounts and supports the operator seat on ride-on power trowels. It anchors the seat to the machine's main frame and carries the operator's weight through the full range of troweling motion. When a seat frame becomes cracked, bent, or otherwise compromised, it can cause the seat to shift or become unstable, directly affecting the operator's ability to maintain safe, controlled machine operation — making prompt replacement with a correct OEM part critical.
For fitment questions or to confirm compatibility with your specific machine, contact the DHS Equipment parts team for assistance.
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 | HTX44K5 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | STX55Y6 |
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.
