The Honda 91351-YB3-003 O-Ring (217.5X3.5) is a genuine OEM seal designed for Honda WB20, WD20, WH15, and WH20 water pumps. As a factory-sourced component, this O-ring is manufactured to Honda's exact dimensional specifications, ensuring the sealing surface mates correctly within the pump assembly. Verify your unit's serial number against the fitment table before ordering, as Honda supersedes parts at production breaks and the correct seal depends on your specific build.
Key Features
- Genuine OEM Sealing Integrity — sourced directly from Honda, this O-ring meets the exact dimensional profile required to maintain a leak-free seal within the water pump housing
- Correct Sizing for the Application — the 217.5 x 3.5 mm specification is a precise fit for the sealing groove it occupies; an undersized or oversized ring will not seal properly and can cause pump failure
- Broad Water Pump Coverage — listed for WB20, WD20, WH15, and WH20 Honda water pumps; confirm your model and serial number against the fitment table to ensure this is the correct seal for your unit
- Serial Number Verification Recommended — Honda updates sealing components at production serial breaks, so checking your pump's serial number before ordering is the surest way to get the right part
An O-ring is a circular elastomeric seal that sits in a machined groove and compresses against a mating surface to prevent fluid from escaping a pressurized joint or housing. In a water pump, O-rings are used at critical junctions in the pump body where a reliable, leak-free seal is essential to maintaining suction and discharge pressure. When an O-ring degrades, deforms, or is improperly sized, the pump loses its ability to hold pressure, resulting in reduced flow output, visible leaking, or complete loss of prime.
Part Details
| Part Number | 91351-YB3-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (217.5X3.5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WB20, WD20, 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.
