The Wacker Neuson Rotor With Bearing is a genuine OEM component designed for GP3800A and GP4000 series portable generators. As a direct factory replacement, this part restores the generator's ability to produce consistent electrical output and is sourced to the exact specifications of the original unit. Compatible across a wide range of GP3800A and GP4000 configurations — including standard, premium, EPA-compliant, CSA-certified, and wheel kit variants — this rotor assembly covers one of the most commonly serviced generator families in the Wacker Neuson lineup. When your generator loses output or fails to generate power altogether, the Rotor With Bearing is a proven path back to full operation.
Key Features
- OEM Winding and Bearing Spec: — Built to the original magnetic and mechanical tolerances, ensuring correct voltage output and smooth shaft rotation from the first start.
- Drop-In Rotor Assembly: — Supplied with the bearing already mounted, so the rotor installs as a complete unit without sourcing additional components separately.
- Broad GP-Series Coverage: — Confirmed fitment across GP3800A and GP4000 generator models, including standard, premium, EPA, CSA, and wheel kit configurations.
- Restores Rated Power Output: — A worn or damaged rotor causes voltage drop, surging, or total loss of output; replacing it with 5000162518 brings the generator back to its rated wattage capacity.
- Genuine Wacker Neuson Part: — Backed by the manufacturer as an authentic OEM replacement, meaning no guesswork on fitment or compatibility with your existing stator and housing.
The rotor is the rotating core of a portable generator's alternator. As the engine spins the rotor through a magnetic field, it induces the alternating current that powers connected equipment. The integrated bearing supports the rotor shaft, keeping it centered and free-spinning within the stator housing. When the bearing wears or the rotor windings degrade — whether from heat, hours, or a winding fault — the generator will produce low, unstable, or zero voltage output. Replacing the rotor assembly with a correctly specified unit like the Wacker Neuson 5000162518 is the most direct way to restore full electrical performance.
Part Details
| Part Number | 5000162518 |
|---|---|
| Old Part Number | 0162518 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Rotor With Bearing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Portable Generator | GP3800A | 5000620104, 5000620379, 5000620485, 5000620342, 5000620484, 5000620041, 5000620103, 5000620010 |
| Premium Portable Generator | GP4000 | 5000620090, 5000620380, 5000620977, 5000620978, 5000620089 |
| GP3800A Generator, EPA w/Wheel Kit | GP3800 | 5000620976, 5000620974, 5000620975, 5100031174 |
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.
