The Wacker Neuson Washer M20 is a genuine OEM component designed for the GV and GP series portable generators, including the GV3800A, GV5600A, GV6600A, GP3800A, GP5600A, and GP6600A. As a direct factory replacement, this M20 washer delivers the exact fit, material grade, and load distribution spec required by Wacker Neuson for these machines. Sourcing the correct OEM washer ensures fastened joints maintain their clamping force and structural integrity under the vibration and load cycles typical of portable generator operation.
Key Features
- OEM-Grade Material and Dimensional Accuracy — Manufactured to Wacker Neuson's exact M20 specification, ensuring correct bearing surface area and material hardness for consistent clamping load distribution.
- Drop-In Hardware Replacement — Sized precisely for M20 fastener assemblies; seats flush without shimming or adjustment across all applicable GV and GP generator configurations.
- Broad GV and GP Series Coverage — Confirmed fitment across GV3800A, GV5600A, GV6600A, GV3800, GV5600, GV6600, GP3800A, GP5600A, and GP6600A portable generator models.
- Protects Mating Surfaces Under Load — Distributes fastener clamping force evenly, preventing surface deformation and fastener loosening caused by generator vibration during extended run cycles.
- Genuine Wacker Neuson OEM Part — Sourced directly through the Wacker Neuson parts network, backed by the manufacturer's quality standards for hardware components.
A washer serves as a load-distributing interface between a fastener — such as a bolt or nut — and the surface it clamps against. By spreading clamping force over a wider area, the washer prevents the fastener from pulling through or deforming softer materials and keeps the joint tight under vibration. In portable generators like the GV and GP series, which run under sustained mechanical vibration, an undersized, worn, or incorrect washer can allow critical fastener joints to loosen over time, leading to component movement, misalignment, or hardware failure. Using the correct OEM-spec Washer M20 maintains joint integrity and keeps the generator's assembled components secure through normal service life.
Part Details
| Part Number | 5000171857 |
|---|---|
| Old Part Number | 0171857 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer M20 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Value Generator | GV3800A | 5000620409, 5000620287, 5000620334 |
| Value Generator | GV5600A | 5000620410, 5000620288, 5000620335 |
| Value Portable Generator | GV3800 | 5000620994 |
| Value Portable Generator | GV5600 | 5000620995 |
| Value Portable Generators | GV6600 | 5000620996 |
| Value Generator, 60Hz | GV6600A | 5000620289, 5000620336 |
| GP3800A | GP3800A | 5100041978 |
| GP5600A | GP5600A | 5100041979 |
| GP6600A | GP6600A | 5100042220 |
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.
Wacker Neuson