The Honda 90505-ZA0-003 Spring Washer (4MM) is a genuine OEM component designed for EL5000, ES6500, and EX5500 generators. As a direct Honda OEM part, it matches the original specification used on the production line. This washer is listed for all three generator models — confirm your unit's serial number against the fitment table to ensure you are selecting the correct part for your machine.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this spring washer meets the same specification as the part originally installed in EL5000, ES6500, and EX5500 generators
- Direct-Fit Replacement — sized at 4MM to match the original hardware, allowing straightforward installation with no adaptation needed
- Serial Number Verification Recommended — Honda supersedes hardware at production breaks, so cross-check your generator's serial number against the fitment table before ordering
- Fastener Retention — a correctly functioning spring washer maintains consistent clamping load on the fastener it seats under, helping prevent loosening from vibration over time
A spring washer is a small split or wave-profile ring placed beneath a nut or bolt head to maintain clamping tension in an assembled joint. Generators produce continuous vibration during operation, which can gradually work standard flat hardware loose; the spring washer's deflection under load acts as a buffer against that movement. When a spring washer is missing or has lost its temper and lies flat, the fastener it supports can back out, compromising the integrity of the assembly it holds together.
Part Details
| Part Number | 90505-ZA0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spring Washer (4MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EL5000, ES6500, EX5500 | 1014078-9999999 |
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.
