The Honda 90506-ZA0-003 Spring Washer (6MM) is a genuine OEM fastener component designed for Honda EB, EL, EM, EMS, ES, and EX series generators, including the EB10000, EB11000, EB12, EB4000, EL5000, EM4000, EMS4000, EMS4500, ES6500, and EX5500. As a genuine Honda part, it meets the exact specifications Honda engineers established for these generators. Verify your generator's model and serial number against the fitment table to confirm this is the correct washer for your unit.
Key Features
- Genuine OEM Honda — sourced directly from Honda, this washer matches the original specification used in production, ensuring consistent clamping performance across the fastener joint it serves.
- 6MM Sizing — sized for 6MM fastener applications; confirm the washer diameter on your unit before ordering, as Honda uses multiple washer sizes across its generator lineup.
- Broad Generator Fitment — listed for Honda EB, EL, EM, EMS, ES, and EX series generators including the EB10000, EB11000, EB4000, EMS4500, and ES6500, among others.
- Serial Number Verification Recommended — Honda supersedes hardware at production breaks, so cross-check your generator's serial number against the fitment table to confirm part number 90506-ZA0-003 is correct for your specific unit.
A spring washer is a hardened, split ring fastener that sits beneath a nut or bolt head to maintain clamping force under vibration and thermal cycling. By biting into both the fastener and the mating surface, it resists the loosening that repeated generator run cycles can cause. When a spring washer is worn flat, deformed, or missing, the fastener it supports can work loose over time, compromising the integrity of the joint.
Part Details
| Part Number | 90506-ZA0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Spring Washer (6MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Generator | EL5000, ES6500, EX5500 | 1014078-9999999 |
| Generator | EB4000, EM4000, EMS4000, EMS4500 | 1082745-9999999 |
| Generator | EB12, EB10000, EB11000 | 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.
