The Multiquip 12950842001 is a genuine OEM Water Pump 55H 4TNV84T-DSA designed for the STX55Y6 hydrostatic ride-on power trowel. As a direct OEM replacement, this water pump is sourced and validated by Multiquip to meet the exact specifications of the original component fitted to STX55Y6 machines. Keeping cooling system components at OEM specification is critical on high-output trowel engines, and the 12950842001 delivers the correct flow and fitment to do just that. DHS Equipment supplies this part direct, so you can be confident you are ordering the right component for your machine.
Key Features
- Genuine OEM Cooling Performance — Engineered to deliver the precise coolant flow rate required by the 4TNV84T-DSA engine, maintaining safe operating temperatures under sustained troweling loads.
- Direct-Fit Replacement — Matches the original mounting bolt pattern, inlet and outlet dimensions, and impeller geometry of the factory-installed pump for a straightforward swap.
- STX55Y6 Verified Fitment — Confirmed compatible with the Multiquip STX55Y6 super-sized hydrostatic ride-on trowel series; check your model tag before ordering.
- Engine Protection Under Load — A functioning water pump is the first line of defense against overheating; a worn or leaking pump risks heat damage to the 4TNV84T-DSA engine block and head.
- Fuel System and Engine Safety Compliance — Correct coolant circulation prevents thermal stress that can compromise fuel system seals and engine gaskets, keeping the machine operating within safe temperature parameters.
The water pump circulates coolant continuously through the engine block and cylinder head, drawing heat away from combustion surfaces and routing it to the radiator where it is dissipated. On a diesel-powered ride-on trowel like the STX55Y6, the engine runs under sustained load for extended finishing passes, making consistent coolant flow essential to long-term engine health. When a water pump begins to fail — through impeller wear, bearing failure, or seal leakage — coolant flow drops, engine temperature rises, and the risk of serious internal engine damage increases rapidly.
For questions about fitment or availability, contact the DHS Equipment parts team who can verify compatibility with your specific STX55Y6 machine before you order.
Part Details
| Part Number | 12950842001 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Water Pump 55H 4TNV84T-DSA |
Compatibility & Fitment
| Name | Model |
|---|---|
| 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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