The Wacker Neuson 5000087839 Regulator is a genuine OEM component designed for the GP-series and G-series portable generators, including the GPS9700, GPS8500, GS8.5V, GS9.7V, G3.3A, G3.3AE, G3.7A, G4.6A, G4.6AE, G4.6AI, G4.6AIT, G5.6A, GS4.6A, GS4.6AE, GS4.6AI, GS5.6A, G3.3AI, and G3.3AIT. Sourced directly from Wacker Neuson, part 5000087839 meets the exact specifications of the original component installed at the factory. This regulator is a direct-fit replacement that installs into the generator's electrical system without modification, restoring proper voltage output to your machine. Confirm your generator's model number and machine number before ordering to ensure compatibility with this part.
Key Features
- Genuine OEM Voltage Accuracy — Built to the exact output specification of the original regulator, ensuring your generator delivers stable, consistent voltage to connected equipment.
- Direct-Fit Electrical Connection — Engineered to match the original wiring harness and mounting configuration across the GPS and G-series generator families, so installation is straightforward.
- Broad Generator Compatibility — Fits a wide range of Wacker Neuson portable generators including GPS9700, GPS8500, G3.3A/AE/AI/AIT, G4.6A/AE/AI/AIT, G5.6A, GS4.6A/AE/AI, GS5.6A, G3.7A, GS8.5V, and GS9.7V models.
- Protects Connected Equipment — A correctly functioning regulator keeps output voltage within safe limits; a failed or degraded regulator can cause damaging voltage spikes or drops that harm tools and equipment plugged into the generator.
The voltage regulator controls the electrical output of the generator's alternator, ensuring that the power delivered to outlets and connected equipment stays within a stable, usable range regardless of load changes or engine speed variation. When the regulator functions correctly, the generator produces clean, consistent power suited for tools, lighting, and sensitive electronics. When the regulator fails or degrades, the result is often erratic voltage — either too high, which can burn out connected equipment, or too low, which causes tools and motors to underperform or stall. Replacing a worn regulator with a genuine OEM part like Wacker Neuson 5000087839 restores the generator's ability to produce dependable, regulated power output.
Part Details
| Part Number | 5000087839 |
|---|---|
| Old Part Number | 0087839 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Regulator |
Compatibility & Fitment
| Name | Models | Machine Number |
|---|---|---|
| 50Hz Portable Generator | G3.3A | 5000008257, 5000008255, 5000008253, 5000008251 |
| 50Hz Portable Generator | G3.3AE | 5000008258, 5000008252, 5000008256, 5000008259, 5000008254 |
| 50Hz Portable Generator | G4.6A | 5000008266, 5000008264, 5000008262, 5000008260 |
| 50Hz Portable Generator | G4.6AE | 5000008267, 5000008268, 5000008265, 5000008263, 5000008261 |
| 50Hz Portable Generator with E lectric Start | GS4.6A | 5000008275, 5000008273, 5000008271, 5000008269 |
| 50Hz Portable Generator with E lectric Start | GS4.6AE | 5000008276, 5000008277, 5000008274, 5000008272, 5000008270 |
| 50Hz Portable Generator with E lectric Start | GS4.6AI | 5000009038 |
| Portable Generator | G3.7A | 5000007189, 5000008044 |
| Portable Generator | G5.6A | 5000007190, 5000008045, 5000009431, 5000620008 |
| Portable Generator | G3.3AIT | 5000009460 |
| Portable Generator | G4.6AIT | 5000009461 |
| Portable Generator with Electr ic Start | GS5.6A | 5000007191, 5000008046 |
| Portable Generator with Electr ic Start | GS8.5V | 5000007661 |
| Portable Generator with Electr ic Start | GS9.7V | 5000007662 |
| Portable Generator with Electr ic Start | GPS8500 | 5000008286 |
| Portable Generator with Electr ic Start | GPS9700 | 5000008287, 5000620264, 5200005042, 5000620973 |
| Portable Generator, 50Hz | G3.3AI | 5000009036 |
| Portable Generator, 50Hz | G4.6AI | 5000009037 |
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.
