The Multiquip 21106 Housing Filter LHA SP50S DN2 or Equal is a genuine OEM component designed for HTX44 and STX55 series hydrostatic ride-on power trowels. This part meets original engineering specifications, ensuring a direct, accurate fit in the hydraulic filtration system of compatible machines. Verified fitment covers HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 models. Sourced directly through Multiquip's authorized parts network, part number 21106 is the correct replacement when the original housing requires service or renewal.
Key Features
- Genuine OEM Construction — Manufactured to the original housing geometry and thread specification, ensuring the filter element seats and seals correctly under hydraulic system pressure.
- Direct-Fit Replacement — Installs into the existing filter mount on HTX44 and STX55 trowels without modification, using the same connection points as the original unit.
- Broad HTX44 and STX55 Coverage — Confirmed fitment across HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, STX55J6, and STX55Y6 hydrostatic ride-on trowel configurations.
- Hydraulic System Integrity — A sound filter housing keeps the hydraulic circuit properly sealed; a cracked or damaged housing allows contamination into the system, accelerating wear on pumps, motors, and valves.
- Fluid Containment Assurance — Correct housing fitment prevents hydraulic fluid bypass and external leaks, which matter on finish-work trowels operating over fresh or cured concrete surfaces.
The filter housing encloses and supports the hydraulic filter element within the trowel's hydraulic system, providing a sealed, pressure-rated chamber through which fluid passes before reaching sensitive components. It keeps the filter element correctly positioned so contamination is captured efficiently rather than bypassing into the circuit. When the housing cracks, warps, or develops damaged threads, the filter assembly can no longer maintain a proper seal — leading to fluid leaks, unfiltered flow, and accelerated wear on the trowel's hydraulic drive and blade-pitch controls.
Part Details
| Part Number | 21106 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Housing Filter LHA SP50S DN2 or Equal |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX44K4 |
| Whiteman Ride-On Power Trowels | HTX44K5 |
| Whiteman Ride-On Power Trowels | STX55J6 |
| Whiteman Ride-On Power Trowels | HTX44Y4 |
| Whiteman Ride-On Power Trowels | HTX44Y5 |
| 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.
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