The Multiquip 45758 Engine Vanguard EFI 40HP Spline is a genuine OEM engine assembly designed for the MD80 mid-sized hydraulic ride-on power trowel. As a direct OEM replacement, this engine is sourced to the same specifications as the original unit installed at the factory, ensuring a correct fit with the MD80's hydraulic drive system and spline-coupled output. Sourced directly through Multiquip's authorized parts network, 45758 is the confirmed replacement part number for operators maintaining or rebuilding MD80 trowels.
Key Features
- Genuine OEM Engine Assembly — Sourced directly from Multiquip as a certified OEM component, matching the original Vanguard EFI 40HP specification for consistent hydraulic output and engine response on the MD80.
- Spline-Output Configuration — Features the correct spline interface for direct coupling to the MD80's hydraulic pump drive, ensuring proper power transfer without adaptation.
- Vanguard EFI Fuel Injection — Electronic fuel injection delivers optimized fuel metering across varying load conditions, supporting consistent trowel blade speed and hydraulic pressure under demanding finishing work.
- Confirmed MD80 Fitment — Validated for the MD80 mid-sized hydrostatic ride-on trowel series; use part number 45758 to confirm compatibility before ordering.
- Full Power Restoration — A worn or failing engine on a ride-on trowel causes loss of hydraulic pressure, uneven blade pitch control, and inconsistent surface finishing; replacing with 45758 restores full rated performance.
The engine on a hydraulic ride-on trowel like the MD80 serves as the sole power source for both the hydraulic drive system and the blade pitch control circuits. On EFI-equipped models, the fuel injection system manages air-fuel delivery electronically, allowing the engine to maintain steady power output as blade load and surface resistance change throughout a concrete finishing pass. When the engine loses power, runs rough, or fails entirely, the hydraulic system loses the pressure needed to drive the machine and adjust blade angles — stopping finishing work until the engine is serviced or replaced.
Part Details
| Part Number | 45758 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Engine Vanguard EFI 40HP Spline |
Compatibility & Fitment
| Name | Model |
|---|---|
| Hydraulic Ride-On Power Trowels | MD80 |
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.
