The Wacker Neuson Voltage Regulator is a genuine OEM component designed for the G-series portable generator lineup, including the G25, G50, G70, G85, G120, G125, and G160 models. As a direct OEM replacement, this regulator is manufactured to the same electrical specifications as the original unit, ensuring correct output voltage control across skid-mounted, mobile, cold weather, and custom generator configurations. Wacker Neuson sources this part through their authorized supply chain, so you can install it with confidence knowing it matches the original component exactly. Whether you're servicing a skid-mounted site generator or a cold weather configuration, part number is the correct replacement for the job.
Key Features
- Matched Output Specification — Built to the original electrical spec for precise voltage regulation, maintaining stable AC output under varying load conditions across the G-series generator range.
- Genuine OEM Part — Sourced directly through Wacker Neuson's authorized parts program, ensuring this regulator meets the same design and material standards as the unit it replaces.
- Broad G-Series Compatibility — Fits multiple G-series configurations including skid-mounted, mobile, cold weather, and custom variants across the G25, G50, G70, G85, G120, G125, and G160 models.
- Drop-In Replacement — Connects using the original wiring harness and mounting points, making installation straightforward for qualified service technicians without additional adapters.
- Protects Connected Equipment — A correctly functioning voltage regulator shields sensitive tools and equipment from damaging voltage spikes or sags; a failed unit can cause erratic output or generator shutdown.
- Electrical Safety Compliance — Using a genuine OEM regulator ensures the generator's output remains within designed voltage tolerances, which is critical when powering sensitive electrical equipment on site.
The voltage regulator controls the electrical output of the generator's alternator, automatically adjusting the field current to maintain a stable AC voltage regardless of changes in engine speed or connected load. Without a properly functioning regulator, the generator can produce voltage that is too high or too low — causing connected tools and equipment to malfunction, overheat, or fail prematurely. When a voltage regulator begins to fail, symptoms typically include fluctuating output voltage, tripped breakers, or a complete loss of power from the generator head.
Part Details
| Part Number | 5000155235 |
|---|---|
| Old Part Number | 0155235 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Voltage Regulator |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator (Cold Weather ) | G120 | 5000620291, 5000620290, 5000620292 |
| Skid-mounted Mobile Generator | G160 | 5000009306, 5000620069, 5000620070 |
| Skid-mounted Mobile Generator | G25 | 5000009258, 5000009462, 5000009476 |
| Skid-mounted Mobile Generator | G50 | 5000009259, 5000009463, 5000009477 |
| Skid-mounted Mobile Generator | G70 | 5000009260, 5000009464, 5000009478 |
| Mobile Generator (custom) | G125 | 5000620067, 5000620068, 5000009261 |
| Skid-mounted Mobile Generator | G85 | 5000009310, 5000009305, 5000009465 |
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.
