The Multiquip 43140-53 Fuel Pump Power Relay is a genuine OEM component designed for STXDF and PRX series ride-on trowels. As an OEM part, it is built to exact specification, ensuring correct electrical compatibility with the machine's fuel delivery circuit. This relay is the right choice for operators and technicians who need a straight swap that restores original function without guesswork. Confirmed fitment includes Whiteman STXDF hydrostatic ride-on trowels and PRX hybrid power floats.
Key Features
- Genuine OEM Electrical Specification — Matches the exact switching capacity and coil resistance required by the STXDF and PRX fuel pump circuits, eliminating the risk of relay chatter or premature failure from mismatched ratings.
- Direct Connector Match — Plug-in replacement that seats into the existing relay socket without wiring modifications, keeping service time short.
- Confirmed Fitment — Verified for STXDF super-sized hydrostatic dual-fuel ride-on trowels and PRX hybrid power float series.
- Fuel System Integrity — A correctly functioning power relay ensures the fuel pump receives clean, consistent switching voltage; a failed relay can cause no-start conditions or intermittent stalling mid-pour.
- Critical Fuel Circuit Safety — This relay governs fuel pump activation; using a correctly rated OEM component helps prevent unintended pump operation or failure to shut down, which matters on dual-fuel and hybrid machines.
The fuel pump power relay is an electromechanical switch that controls when the fuel pump receives power from the machine's electrical system. When the relay receives a low-current signal from the ignition or engine control circuit, it closes an internal contact that allows higher current to flow to the fuel pump itself. If this relay fails — whether due to corrosion, a burnt contact, or a faulty coil — the fuel pump will not prime or run, leaving the trowel unable to start or causing it to cut out under load.
Part Details
| Part Number | 43140-53 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Fuel Pump Power Relay |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | STXDF |
| Ride-On Power Float | PRX |
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.
