The Honda 90302-YG0-003 Flange Nut (8MM) is a genuine OEM Flange Nut (8MM) designed for WT20 and WT30 water pumps. As a factory-sourced component, this nut is manufactured to the same specifications as the hardware installed at the factory, ensuring correct thread engagement and clamping force on your Honda pump. Honda supersedes hardware at serial breaks, so verify your pump's serial number against the fitment table before ordering to confirm part number 90302-YG0-003 is the right listing for your unit.
Key Features
- Genuine OEM Hardware — sourced directly from Honda, this nut meets the same thread and dimensional specifications as the original, so it seats and torques correctly without guesswork.
- 8MM Flange Design — the integrated flange distributes clamping load across a wider bearing surface than a standard hex nut, reducing the risk of loosening under vibration.
- WT20 and WT30 Fitment — listed for Honda WT20 and WT30 water pumps; confirm your serial number against the fitment table to ensure this is the correct listing for your machine.
A flange nut combines a standard hex nut with a wide, integrated washer-like flange on one face. The flange spreads the clamping force over a larger contact area, which helps fastened joints stay tight even when the machine is running under the vibration and load typical of water pump operation. When a flange nut is worn, stripped, or missing, the joint it secures can work loose, leading to misalignment, leaks, or component damage on the pump.
Part Details
| Part Number | 90302-YG0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Flange Nut (8MM) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WT20, WT30 | 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.
