The Wacker Neuson Flywheel is a genuine OEM component designed for the GPi4300 and GPSi4300 portable inverter generators. As a direct factory replacement, it carries the same specifications as the original part, ensuring proper fit and function without guesswork. This flywheel is verified to fit multiple configurations across the GPi4300 and GPSi4300 model families, making it the correct choice for owners and service technicians working on these units.
Key Features
- Genuine OEM Magnetic Integrity — Sourced directly from Wacker Neuson, this flywheel maintains the precise magnetic pole geometry required for correct ignition timing and stable AC output on inverter generator applications.
- Direct-Fit Replacement — Machined to original dimensional tolerances, the 5000226125 bolts to the crankshaft using the existing hardware and taper interface — no re-balancing or adaptation needed.
- Broad GPi4300 & GPSi4300 Coverage — Confirmed fitment across GPi4300 and GPSi4300 series inverter generators, covering multiple unit configurations under a single part number.
- Consistent Power Generation — A correctly functioning flywheel keeps the rotor spinning at a stable rotational mass, which is critical for smooth, clean power output from an inverter generator. A worn or cracked flywheel can cause misfires, voltage irregularities, or complete loss of output.
- Electrical System Safety — On inverter generators, flywheel integrity is directly tied to rotor alignment and stator clearance. Using the correct OEM flywheel helps prevent rotor-to-stator contact that can cause winding damage or electrical failure.
The flywheel is a heavy rotating disc mounted directly to the engine crankshaft. In an inverter generator, it serves a dual purpose: it stores rotational energy to keep the engine running smoothly between power strokes, and it houses the permanent magnets that work with the stator to generate electricity. When a flywheel cracks, loses a magnet, or becomes unbalanced, the engine may run roughly, produce erratic output voltage, or fail to generate power altogether. Replacing a damaged flywheel with a genuine OEM part restores proper engine balance and electrical generation performance.
Part Details
| Part Number | 5000226125 |
|---|---|
| Old Part Number | 0226125 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flywheel |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| GPi4300 | GPi4300 | 5000620962, 5000620782, 5000620784 |
| GPSi4300 | GPSi4300 | 5000620963, 5000620783, 5000620937 |
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.
