The Multiquip 42611 Mechanical Piston Pump Assembly 45 cc 4.35 ksi is a genuine OEM hydraulic pump assembly designed for HTX6H and STX6H hydrostatic ride-on power trowels. As a direct OEM replacement, part 42611 is built to the same specifications as the original component, ensuring correct operating pressure and displacement for these machines. This assembly is confirmed to fit the HTX6H heavy-duty hydrostatic series and the STX6H super-sized hydrostatic series trowels. Sourced directly through authorized Multiquip distribution channels, DHS Equipment supplies this part with full OEM traceability.
Key Features
- Genuine OEM Hydraulic Spec: — Rated at 45 cc displacement and 4.35 ksi operating pressure, matching the original pump's output requirements for consistent blade pitch and drive control.
- Direct-Fit Replacement: — Engineered to the same port configuration and mounting footprint as the original assembly, allowing straightforward installation without modification to existing hydraulic lines.
- Confirmed Fitment: — Designed specifically for Multiquip HTX6H and STX6H hydrostatic ride-on trowels, ensuring correct integration with the machine's hydraulic drive system.
- Consistent Blade and Drive Response: — A correctly functioning piston pump maintains steady hydraulic flow, enabling precise blade pitch adjustment and smooth machine travel across the slab.
- Hydraulic System Integrity: — Using the correct OEM-rated pump prevents pressure fluctuations that can cause erratic trowel blade behavior or loss of drive, both of which pose serious safety risks on an active pour.
The mechanical piston pump is the core hydraulic power source on hydrostatic ride-on trowels, converting engine rotation into controlled hydraulic flow that drives both the wheel motors and the blade pitch adjustment system. When the pump maintains its rated displacement and pressure, the operator gets consistent, predictable response from the trowel — critical for achieving a uniform finish on large concrete slabs. A worn or failing piston pump typically presents as sluggish blade response, loss of drive power, or inconsistent hydraulic pressure, all of which compromise finish quality and operator control.
Part Details
| Part Number | 42611 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Mechanical Piston Pump Assembly 45 cc 4.35 ksi |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HTX6H |
| Whiteman Ride-On Power Trowels | STX6H |
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.
