The Wacker Neuson is a genuine OEM Engine Deere 4045HF285 158HP designed for the G120 series portable generator lineup. This is a direct factory-sourced replacement power unit, covering the full range of G120 configurations including skid-mounted, cold weather, and mobile generator variants. As a genuine OEM component, the is manufactured to the same specifications as the original engine installed at the factory, ensuring correct mounting interfaces, electrical connections, and output ratings. If your G120 generator is experiencing a loss of power, failure to start, or internal engine damage, this is the authoritative replacement unit to restore full operational capacity.
Key Features
- John Deere 4045HF285 Power Unit — Purpose-built 4.5L four-cylinder turbocharged diesel engine rated at 158HP, matched specifically to the G120 generator's electrical output and load requirements.
- Genuine OEM Sourcing — Supplied by Wacker Neuson as a factory-authorized replacement, ensuring the engine meets original torque curves, emissions compliance, and interface specifications for the G120 platform.
- Broad G120 Series Coverage — Confirmed fitment across multiple G120 configurations: standard skid-mounted, cold weather packages, Transport Canada tank versions, and custom mobile generator builds.
- Correct Mounting and Interface Compatibility — Engine mounting points, PTO coupling, cooling connections, and wiring harness interfaces match the original installation, supporting a straightforward drop-in exchange.
- Restored Generator Output Capacity — A worn or seized engine causes complete generator failure, leaving sites without power; replacing with the correct 5000174570 unit returns the G120 to full rated output.
- Emissions and Regulatory Compliance — The Deere 4045HF285 carries Tier 3 / Stage IIIA certification; using the correct OEM engine replacement maintains your machine's regulatory standing for permitted jobsite use.
The engine is the primary power source for the G120 generator, converting diesel fuel into the mechanical rotation that drives the alternator to produce electrical output. The John Deere 4045HF285 is a turbocharged four-cylinder diesel selected for its proven duty-cycle endurance under continuous load — a critical demand in portable generator applications. When the engine fails through wear, overheating, or internal damage, the generator produces no power; replacing it with the correct OEM unit, part number 5000174570, is the only way to fully restore the machine's rated electrical capacity and operating reliability.
Part Details
| Part Number | 5000174570 |
|---|---|
| Old Part Number | 0174570 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Engine Deere 4045HF285 158HP |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| G120-GENERATOR, SKID, CUSTOM, DEERE T3 | G120 | 5000620654, 5000620653, 5200001320, 5000620652, 5200006901, 5200003159, 5000620311, 5000620309, 5000620310, 5200008353, 5200008350, 5200008351, 5200008349, 5100025818 |
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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