The Honda 90301-YG0-003 Nut-Washer (8MM) is a genuine OEM fastener designed for Honda WT20, WT30, and WT40 water pumps. As a direct Honda OEM component, this nut-washer is manufactured to the same specifications as the original hardware installed at the factory. Sourced directly through Honda's authorized parts network, part number 90301-YG0-003 ensures you are installing the correct hardware for your pump. Verify your unit's serial number against the fitment table to confirm this is the right specification for your machine.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, ensuring the correct thread engagement and clamping load for the 8MM fastener position on these water pumps
- Integrated Washer Design — the combined nut and washer in a single piece distributes load evenly and eliminates the need to source or manage a separate washer during reassembly
- Confirmed Fitment — listed for Honda WT20, WT30, and WT40 water pumps; check your serial number against the fitment table to confirm applicability to your specific unit
A nut-washer is a combined fastener that integrates a washer face into the nut body, allowing it to clamp and distribute load across a surface in a single component. On Honda water pumps, correct fastener hardware keeps assemblies properly secured through the vibration and operational stresses these pumps encounter in field use. Using the wrong fastener — incorrect thread pitch, diameter, or bearing face — can result in loose assemblies or damaged mating surfaces that compromise pump performance.
Part Details
| Part Number | 90301-YG0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Nut-Washer (8MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WT20, WT30, WT40 | 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.
