The Honda 90103-YG0-003 Bolt-Washer (12X45) is a genuine OEM fastener designed for Honda WT20, WT30, and WT40 water pumps. As a direct Honda OEM part, this bolt-washer is produced to the same specification as the original hardware installed at the factory. This component is listed for all three models — WT20, WT30, and WT40 — so buyers should confirm the correct application against their unit's serial number using the fitment table before ordering.
Key Features
- Genuine Honda OEM Hardware — sourced directly from Honda, this bolt-washer matches the original part installed in Honda WT-series water pumps, ensuring the integrated washer seats and clamps exactly as intended.
- Integrated Washer Design — the combined bolt and washer in one piece eliminates the need to manage a separate washer during reassembly, keeping service straightforward on the WT20, WT30, and WT40.
- Broad WT-Series Coverage — part number 90103-YG0-003 is listed for the Honda WT20, WT30, and WT40 water pumps, including multiple serial ranges; verify your serial number against the fitment table to confirm the correct application for your unit.
- Maintains Pump Integrity — a properly torqued bolt-washer holds pump components securely in place; a loose or damaged fastener can lead to component movement, leaks, or accelerated wear during pump operation.
A bolt-washer is a fastener that combines a threaded bolt shank with a permanently attached washer flange at the head. On Honda WT-series water pumps, this type of fastener is used where consistent clamping load and load distribution across a surface are important to keep pump components properly secured during operation. When a bolt-washer becomes damaged, corroded, or overtorqued to the point of failure, it can compromise the clamping integrity of the assembly it holds, potentially resulting in looseness, vibration, or fluid leaks that affect pump performance.
Part Details
| Part Number | 90103-YG0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Bolt-Washer (12X45) |
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.
