The Wacker Neuson is a genuine OEM Voltage Regulator designed for ML440 Light Towers and MG5 series Portable Generators. Sourced directly from Wacker Neuson, this part carries the same specifications as the original component installed at the factory, ensuring correct electrical output and compatibility across the full range of qualifying ML440 and MG5 model configurations. Fitment covers a wide span of ML440 Light Tower and Multifunction Floodlight Tower variants, as well as MG5, MG5d, and MG5sd Portable Generator builds. If your machine is throwing voltage irregularities or the existing regulator has failed, part number is the correct replacement to restore normal operation.
Key Features
- Correct Output Specification — Genuine OEM construction ensures the regulator maintains the precise voltage output your ML440 or MG5 machine requires, with no guesswork on electrical tolerance.
- Direct OEM Replacement — Connects to the existing wiring harness and mounting points without adaptation, matching the original regulator's form and interface exactly.
- Broad Model Coverage — Fits ML440 Light Towers, ML440 Multifunction Floodlight Towers, and MG5, MG5d, and MG5sd Portable Generators across numerous configuration codes.
- Stable Power Delivery — A properly functioning voltage regulator keeps generator output steady under load; a failed or degraded unit can cause fluctuating voltage that damages connected equipment or triggers shutdowns.
- Electrical Safety Assurance — Voltage regulation is a critical electrical function; using a genuine OEM component rated to the correct specification protects both the machine and any tools or lights drawing power from it.
- Verified Wacker Neuson Part — Sold under the authentic Wacker Neuson part number 5000404256, confirming you are ordering the correct component for your specific machine.
A voltage regulator controls and stabilizes the electrical output of a generator, ensuring that the voltage delivered to connected equipment stays within the correct range regardless of load changes or engine speed variations. Without a functioning regulator, output voltage can spike or drop unpredictably, risking damage to sensitive electrical loads such as lighting systems, tools, or control panels. When a voltage regulator begins to fail, common symptoms include flickering or dimming lights, erratic meter readings, and in severe cases, complete loss of usable power output from the generator.
Part Details
| Part Number | 5000404256 |
|---|---|
| Old Part Number | 0404256 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Voltage Regulator |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Light Towers | ML440 | 5000630117, 5000630204, 5000630323, 5000630324, 5000630325, 5000630327 |
| Portable Generators | MG5 | 5000630137, 5000630143, 5000630233, 5000630254, 5000630224, 5000630229, 5000630237, 5000630239, 5000630252, 5000630308, 5000630310, 5000630334 |
| Portable Generators | MG5sd | 5000630202, 5000630214, 5000630236 |
| MG5 Generator | MG5d | 5000630211 |
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.
