The Honda 91351-YG3-000 O-Ring (217.5X3.5) is a genuine OEM sealing component designed for WB20, WH15, and WH20 water pumps. As a direct Honda OEM part, it is manufactured to the exact dimensions required for a proper seal in the specific application these pumps demand. Confirm your pump's serial number against the fitment table to ensure part number 91351-YG3-000 is the correct listing for your unit before ordering.
Key Features
- OEM Sealing Precision — manufactured to Honda's exact dimensional specification (217.5 mm inner diameter, 3.5 mm cross-section) for the proper compression and seal retention this application requires
- Direct OEM Replacement — this O-Ring installs in place of the original with no re-sizing or adaptation, restoring the sealed interface to as-built condition
- Broad Pump Compatibility — listed for WB20, WH15, and WH20 Honda water pumps; verify your serial number against the fitment table, as Honda supersedes parts at serial breaks
- Leak Prevention — a correctly seated O-Ring maintains pressure integrity and prevents fluid bypass; a worn or deformed ring allows leakage that reduces pump output and can accelerate wear on surrounding components
An O-Ring is a continuous circular seal that prevents fluid from escaping past a joint or interface by being compressed between two mating surfaces. In a water pump, maintaining that seal is essential to sustaining flow pressure and preventing water from reaching areas of the pump where it can cause damage. When an O-Ring hardens, cracks, or takes a permanent set over time, it loses the compression needed to form a reliable seal — resulting in leaks, pressure loss, and reduced pumping performance. Replacing a worn O-Ring with the correct Honda OEM part restores the sealed assembly to its original operating condition.
Part Details
| Part Number | 91351-YG3-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (217.5X3.5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WB20 | 3044855-9999999 |
| Water Pump | WH15, WH20 | 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.
