The Multiquip 21109 Sight Glass Dash 12 Orb Steel is a genuine OEM component designed for HTX44 and STX55 series hydrostatic ride-on power trowels. Sourced directly from Multiquip, this part meets the same specifications as the original, ensuring a correct installation in the hydraulic system. It is confirmed compatible with the HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTXD6i, STX55J6, STX55Y6, and STXD6i models. When you need a direct OEM replacement, part 21109 is the correct choice for maintaining hydraulic visibility and system integrity on your machine.
Key Features
- Genuine OEM Construction — Steel-bodied Dash 12 ORB fitting meets the original hydraulic system specification, ensuring correct thread engagement and seal integrity at installation.
- Direct Hydraulic Port Fit — Dash 12 ORB (O-Ring Boss) thread pattern drops directly into the designated hydraulic port with no rework or thread adaptation needed.
- Broad HTX and STX Series Compatibility — Verified for HTX44K4, HTX44K5, HTX44Y4, HTX44Y5, HTXD6i, STX55J6, STX55Y6, and STXD6i ride-on trowels.
- Hydraulic Fluid Monitoring — Provides a clear visual reference point for fluid level or flow confirmation, allowing operators to catch low-fluid conditions before they cause hydraulic system damage.
- Leak Prevention at the Port — The ORB thread design with a face-seal O-ring eliminates the weep leaks common with tapered pipe fittings, keeping the hydraulic circuit sealed under operating pressure.
A sight glass is a transparent or semi-transparent window fitted into a hydraulic or fluid reservoir circuit that allows an operator to visually confirm fluid level or flow without opening the system. On hydrostatic ride-on trowels like the HTX44 and STX55 series, maintaining proper hydraulic fluid level is critical — the hydraulic circuit controls both blade pitch and machine drive, so a low-fluid condition can result in sluggish blade response, erratic drive behavior, or accelerated pump wear. A cracked, clouded, or leaking sight glass eliminates your ability to monitor fluid condition at a glance, turning a simple visual check into a guessing game that can lead to costly hydraulic repairs.
For help confirming fitment or placing your order, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 21109 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Sight Glass Dash 12 Orb Steel |
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 | STXD6i |
| Whiteman Ride-On Power Trowels | HTXD6i |
| 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.
