The Multiquip 12950942010 Water Pump Assembly is a genuine OEM component designed for STXD6i and HTXD6i Whiteman ride-on power trowels. Sourced directly from Multiquip, this assembly matches the original part in fit and function, ensuring a straightforward swap with no guesswork on compatibility. It is the correct replacement for both the super-sized hydrostatic STXD6i and the heavy-duty hydrostatic HTXD6i series trowels powered by Yanmar diesel engines. Keeping this assembly in proper working order is essential to maintaining coolant circulation and protecting the engine during demanding finishing operations.
Key Features
- Genuine OEM Coolant Flow Integrity — Manufactured to Multiquip's original engineering specifications, this pump assembly delivers the correct flow rate and pressure required to maintain safe engine operating temperatures.
- Direct-Fit Assembly — Engineered to drop directly into the cooling system on STXD6i and HTXD6i trowels, matching original mounting points, inlet and outlet ports, and hardware interfaces.
- Confirmed Fitment for STXD6i and HTXD6i — Verified compatible with both Whiteman super-sized and heavy-duty hydrostatic ride-on trowel models in this series.
- Engine Protection Under Load — A fully functioning water pump keeps the Yanmar diesel running within its thermal range during extended finishing cycles; a worn or failing pump risks overheating and unplanned shutdowns on the slab.
- Fuel System and Engine Safety Relevance — On diesel-powered trowels, maintaining proper coolant circulation is critical to preventing thermal damage that can affect fuel injection components and engine longevity.
The water pump assembly circulates coolant through the engine block and radiator, drawing heat away from the combustion chamber and maintaining stable operating temperatures. On ride-on trowels like the STXD6i and HTXD6i, the engine works hard under sustained load, making consistent coolant flow essential to preventing overheating. When a water pump begins to fail — through seal wear, impeller degradation, or bearing failure — coolant flow drops, engine temperatures climb, and the risk of costly thermal damage increases significantly.
Part Details
| Part Number | 12950942010 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Water Pump Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXD6i |
| Whiteman Ride-On Power Trowels | HTXD6i |
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.
