The Wacker Neuson Flywheel Housing is a genuine OEM component designed for the G40 and G50 series portable generators. Sourced directly from Wacker Neuson, this flywheel housing matches the original part in every dimension and material specification — ensuring a seamless installation with no guesswork. It is compatible across multiple G40 and G50 configurations, including standard, mobile, and premium variants. Whether you are restoring a generator to working condition or completing a scheduled overhaul, the delivers the fit and durability you expect from a factory-original part.
Key Features
- Genuine OEM Structural Integrity — Cast and machined to original tolerances, ensuring the flywheel is correctly aligned and securely enclosed within the generator assembly.
- Direct Bolt-On Replacement — Matches original mounting points and mating surfaces on G40 and G50 generator engines, allowing straightforward installation against existing hardware.
- Broad G-Series Compatibility — Fits multiple G40 and G50 configurations including standard, mobile, and premium generator variants across various market regions.
- Protects Critical Rotating Components — A properly fitted flywheel housing shields the flywheel and ring gear from contamination and physical damage, preserving smooth engine operation and starting reliability.
- Verified Part Number Fit — Part number 5200021117 is confirmed against Wacker Neuson's official parts documentation, so you can order with confidence that you are receiving the correct component.
The flywheel housing is a structural enclosure that surrounds and protects the flywheel — a heavy rotating disc that stores rotational energy to keep the engine running smoothly between power strokes and supports reliable starter engagement. The housing also serves as a critical alignment reference point between the engine block and the starter motor, ensuring consistent mesh between the starter pinion and the ring gear. When a flywheel housing is cracked, damaged, or missing, it can expose the flywheel to debris, compromise engine alignment, and lead to difficult starting or starter motor damage.
Part Details
| Part Number | 5200021117 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flywheel Housing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Generator | G40 | 5200015906, 5200016640, 5100029184, 5200015907 |
| Generator | G50 | 5200015909, 5100022009, 5100022008 |
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.
