The Honda 90503-ZA1-811 Spring Washer (4MM) is a genuine OEM component designed for EW140, EW170, EW171, and EXW171 welder generators. As a factory-sourced part, this spring washer matches the original specification Honda built into these machines, ensuring a direct, no-guesswork replacement. If you're restoring a welder generator to working order or completing a scheduled service, verifying your machine's serial number against the fitment table is the best way to confirm this is the correct part for your unit.
Key Features
- Genuine OEM Sourcing — supplied directly from Honda, matching the original spring washer specification used during assembly of EW-series welder generators
- Exact 4MM Size — the (4MM) designation identifies this specific variant; confirm your machine requires a 4MM spring washer before ordering
- Broad Welder Generator Coverage — listed for the EW140, EW170, EW171, and EXW171 welder generators; check your serial number against the fitment table to confirm applicability
- Prevents Fastener Loosening — a spring washer maintains clamping force under vibration, keeping the fastener assembly secure during operation
A spring washer is a small but important hardware component that sits beneath a fastener to maintain tension and resist loosening caused by vibration during operation. In welder generators like the EW140, EW170, EW171, and EXW171 — machines that run under sustained mechanical and electrical load — fastener security is essential to keeping assemblies tight over time. When a spring washer loses its tension or is missing entirely, the fastener it supports can back out, potentially allowing connected components to shift or work loose.
Part Details
| Part Number | 90503-ZA1-811 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spring Washer (4MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Welder Generator | EW140, EW170, 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.
