The Multiquip 21100 Hose Assembly.5Idx19 Lg 45 One End is a genuine OEM hydraulic hose assembly designed for the STX55J6 and STX55Y6 super-sized hydrostatic ride-on power trowels. As a direct OEM replacement, this assembly meets the original dimensional and pressure specifications required by Multiquip for these machines. DHS Equipment supplies this part direct, so you can confirm the correct fit for your STX55 series trowel before it ships. Keeping the hydraulic circuit intact with the correct hose ensures your trowel maintains consistent blade pitch control and drive response on the slab.
Key Features
- Genuine OEM Construction — Manufactured to Multiquip's original hose routing, inside diameter, and end-angle specifications, ensuring the assembly holds rated pressure without seeping or ballooning under load.
- 45-Degree End Configuration — The single 45-degree end fitting is purpose-built for the tight routing geometry inside the STX55 chassis, allowing the hose to seat correctly at its port without stress on the fitting.
- Confirmed Fitment for STX55J6 and STX55Y6 — Verified for both the John Deere-powered STX55J6 and Yanmar-powered STX55Y6 hydrostatic ride-on trowels.
- Hydraulic Circuit Integrity — A degraded or leaking hose in a hydrostatic trowel causes erratic blade pitch response and loss of drive pressure; replacing it with the correct 21100 assembly restores full hydraulic function.
- Direct-Ship OEM Part — Stocked and sold by DHS Equipment as an authorized Multiquip parts source, with the part number cross-referenced to your machine to avoid costly returns.
This hose assembly is part of the hydraulic circuit that powers blade pitch adjustment and ground drive on the STX55 series hydrostatic ride-on trowel. Hydraulic hoses in this application carry pressurized fluid between the pump, control valves, and actuators that govern how the trowel blades angle against the concrete surface. When a hose cracks, swells, or develops a pinhole leak, hydraulic pressure drops and the operator loses precise control over blade pitch — resulting in uneven finishing and potential damage to freshly placed concrete. Replacing a worn hose promptly with the correct OEM assembly keeps the hydraulic system operating at the pressure levels the machine was engineered to deliver.
Part Details
| Part Number | 21100 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Hose Assembly .5Idx19 Lg 45 One End |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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.
Multiquip
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