The Wacker Neuson Flange Bolt is a genuine OEM component designed for the GP3800, GP5600A, GP6600A, and GPS5600A/GPS6600 series portable generators. As a direct factory replacement, this flange bolt delivers the exact thread spec, shank diameter, and integrated flange bearing surface required for secure, vibration-resistant fastening throughout the generator assembly. Whether you're servicing a standard unit or a wheel-kit-equipped model, part number ensures the correct fit first time. Wacker Neuson's OEM designation means this bolt is manufactured to the same standard as the original hardware shipped with the machine.
Key Features
- Integrated Flange Bearing Surface — The built-in washer flange distributes clamping load evenly, preventing fastener pull-through and maintaining joint integrity under generator vibration.
- OEM Thread and Dimensional Accuracy — Manufactured to exact pitch, diameter, and hardness specifications, eliminating the risk of cross-threading or under-torque failures that can occur with non-spec fasteners.
- Direct Drop-In Replacement — Installs into existing threaded bores without rework; matches the original bolt position and torque spec straight from the box.
- Broad GP-Series Compatibility — Fits GP3800, GP5600A, GP6600A, GPS5600A, GPS6600, and GV3800 portable generator models, covering a wide range of EPA, CSA, and CAN GFI variants.
- Corrosion-Resistant Hardware Grade — Built to withstand the heat cycling and outdoor exposure typical of portable generator operation, maintaining clamp load across extended service intervals.
A flange bolt combines a standard hex bolt with an integrated circular flange beneath the head that acts as a built-in washer. This design spreads the clamping force over a wider surface area, making it especially effective in applications subject to continuous vibration — exactly the environment a running generator creates. When a flange bolt stretches, strips, or is replaced with an incorrect fastener, joint loosening can follow, potentially leading to misaligned components, increased vibration, or structural damage to the generator frame or covers. Using the correct OEM replacement, part number 5200000557, preserves the engineered clamping integrity of the original assembly.
Part Details
| Part Number | 5200000557 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flange Bolt |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Premium Portable Generator | GP5600A | 5000620094, 5000620095, 5000620381, 5000620382, 5000620984, 5000620979, 5000620980 |
| GP6600A GENERATOR,CAN GFI | GP6600A | 5000620100, 5000620101, 5000620384, 5100042220 |
| Premium Portable Generator | GP6600 | 5000620385, 5000620989, 5000620990, 5000620985, 5000620986 |
| Portable Generator | GPS5600A | 5000620981, 5000620982 |
| GPS6600A Generator, EPA | GPS6600 | 5000620987 |
| GP3800A Generator, EPA w/Wheel Kit | GP3800 | 5000620976, 5000620974, 5000620975, 5100031174 |
| GP5600A Generator, EPA w/Wheel Kit | GP5600 | 5000620983 |
| Value Portable Generator | GV3800 | 5000620994 |
| GP3800A | GP3800A | 5100041978 |
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.
