The Honda 90504-SB0-000 Plain Washer (12MM) is a genuine OEM component designed for EU3000 inverter generators, H5013 multi-purpose tractors, H5518 multi-purpose tractors, H6522 compact tractors, and RT5000 multi-purpose tractors. As a Honda OEM part, it is manufactured to the exact dimensions required by the original assembly, ensuring a consistent fit across every application in its fitment range. Always confirm your machine's serial number against the fitment table before ordering, as Honda periodically updates part numbers at production breaks.
Key Features
- Genuine OEM Fit — sourced directly from Honda, this 12MM washer matches the original specification for load distribution in each listed machine
- Broad Fitment Coverage — listed for EU3000 inverter generators and the H5013, H5518, H6522, and RT5000 tractors, making it a commonly stocked service item across multiple Honda product lines
- Serial Number Verification Advised — Honda updates part configurations at serial breaks, so cross-check your machine's serial number with the fitment table to confirm this is the correct washer for your unit
A plain washer distributes the clamping load of a fastener across a broader surface area, preventing the bolt head or nut from pulling into or damaging the mating material. On equipment like inverter generators and tractors, washers are used throughout the assembly — at panel mounts, bracket fasteners, and structural joints — to maintain consistent clamping force over time. When a washer is missing, undersized, or worn, the fastener can work loose or the surrounding material can deform, leading to vibration, misalignment, or fastener failure.
Part Details
| Part Number | 90504-SB0-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Plain Washer (12MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Compact Tractor | H6522 | All |
| Inverter Generator | EU3000 | 1047140-9999999 |
| Multi-Purpose Tractor | H5013, H5518, RT5000 | 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.
