The Wacker Neuson Cummins Engine is a genuine OEM powerplant designed for the G120 Generator series, including Custom T4i, Standard T4i, Cold Weather T4i, and Hertz T4i configurations. As a direct OEM replacement, this engine is sourced through Wacker Neuson's authorized parts program, ensuring it meets the exact specifications required for each G120 variant. Confirmed fitment spans the full G120 family, making it the correct choice whether you're servicing a standard rental unit or a specialized cold-weather or Hertz-configured machine.
Key Features
- OEM-Matched Power Output: — Engineered to the precise displacement, fuel delivery, and emissions calibration required by the G120 platform, ensuring the generator meets its rated output from the first start.
- Tier 4i Emissions Compliance: — This Cummins Engine is certified to Tier 4 Interim standards, keeping your G120 Generator in full regulatory compliance on permitted jobsites and public contracts.
- Broad G120 Fitment: — Verified for the G120 Custom T4i, Standard T4i, Cold Weather T4i, and Hertz T4i generator configurations — a single part number covering the entire G120 engine-replacement scope.
- Direct-Drop Replacement: — Engineered to match the OEM mounting points, cooling connections, and electrical interface of the original Cummins installation in the G120 frame, simplifying the swap for qualified technicians.
- Sustained Generator Availability: — A correctly matched engine keeps the G120 delivering its full rated power capacity; a worn or failed engine risks voltage instability, load-shedding, and unplanned downtime on critical power supply applications.
The engine is the primary power source for the G120 portable generator, converting diesel fuel into the rotational energy that drives the alternator to produce electrical output. In a generator application, engine health directly determines power quality — fuel efficiency, voltage stability, and load capacity all depend on the engine performing within its design parameters. When the engine degrades or fails, the generator can no longer sustain rated output, risking damage to connected equipment and interrupting power-critical operations.
Part Details
| Part Number | 5200003476 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cummins Engine |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| G120 Generator,Custom T4i | G120 | 5200003856, 5200003854, 5200003855, 5200008715 |
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.
Wacker Neuson