The Honda 31707-ZA1-811 Insulating Washer is a genuine OEM component designed for EW140, EW170, EW171, and EXW171 welder generators. As a direct Honda OEM part, it is manufactured to the exact specifications required for proper function in these machines. Confirm your unit's serial number against the fitment table before ordering, as Honda periodically supersedes parts at production breaks within the same model line.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this insulating washer meets the exact specifications for EW140, EW170, EW171, and EXW171 welder generators.
- Electrical Isolation — engineered to provide the dielectric separation this application requires, preventing unwanted current paths within the welder generator's electrical assembly.
- Direct OEM Replacement — matches the original part precisely, allowing straightforward installation without rework or adaptation.
- Serial Number Verification Recommended — Honda updates parts at production milestones, so cross-check your machine's serial number against the compatibility table to confirm this is the correct washer for your unit.
An insulating washer provides electrical isolation between two conductive components at a fastened joint. In a welder generator, where both high-voltage generation and welding output circuits are present, maintaining proper separation between components is essential to safe and correct operation of the electrical assembly. When this washer is missing, damaged, or substituted with a non-insulating alternative, it can compromise the integrity of the circuit it is designed to isolate.
Part Details
| Part Number | 31707-ZA1-811 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Insulating Washer |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Welder Generator | EW170 | 1000001-1022281 |
| Welder Generator | EW140, EW171, EXW171 | All |
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.
