The Honda 91354-YH4-610 O-Ring (23.7X3.5) is a genuine OEM sealing ring designed for Honda water pumps including the WB20, WB30, WH15, WH20, WX10, and WX15. As a direct Honda OEM part, it is manufactured to the exact dimensions and material specifications required for a proper seal in these pumps. Confirm the part number 91354-YH4-610 against your pump's parts diagram before ordering, as Honda lists multiple O-ring sizes across its water pump lineup.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Honda's exact 23.7 x 3.5 mm specification, ensuring the correct compression and fluid-tight seal these water pumps depend on
- Direct OEM Replacement — this O-ring installs exactly as the original, with no trimming or adaptation needed to achieve the correct seating
- Broad Water Pump Coverage — listed for Honda WB20, WB30, WH15, WH20, WX10, and WX15 water pumps; verify the part number against your pump's parts diagram to confirm applicability to your specific unit
- Leak Prevention — a worn or damaged O-ring allows water or air to bypass the seal, reducing pump output pressure and flow; replacing this part restores the pump's ability to move water efficiently
An O-ring is a precisely sized circular seal that prevents fluid from leaking past a joint, port, or fitting within a pump's water passages. In Honda centrifugal water pumps, these seals maintain the pressure integrity needed to deliver consistent flow — whether the pump is moving clean water, handling light debris, or operating under high-pressure conditions. When an O-ring degrades, cracks, or loses its profile from age or heat cycling, the resulting bypass reduces pumping efficiency and can allow water to escape at connections where a proper seal should be maintained.
Part Details
| Part Number | 91354-YH4-610 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | O-Ring (23.7X3.5) |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WB20, WB30, WH15, WH20, WX10, WX15 | 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.
