The Honda 78107-YF2-505 Volute Case is a genuine OEM component designed for the WX15 water pump. As a direct Honda OEM part, it is manufactured to the exact specifications of the original, ensuring the pump housing geometry that channels water from the impeller to the discharge port is preserved precisely. This part is the correct replacement for WX15 units and confirms to part number 78107-YF2-505 for straightforward verification against your machine.
Key Features
- Genuine OEM Pump Housing Accuracy — as a Honda OEM volute case, the internal spiral chamber is shaped to exact original dimensions, maintaining the pressure recovery and flow efficiency the WX15 was designed to deliver
- Direct-Fit Replacement — engineered to the same dimensions as the original, this part drops into the WX15 pump assembly without modification, restoring the sealed flow path between impeller and discharge
- Restores Full Pump Output — a cracked, worn, or damaged volute case causes pressure loss and reduced flow; replacing it with this genuine part brings the pump back to its rated delivery performance
- Confirm Your Serial Number — Honda updates parts at production breaks, so verify your WX15 serial number against the fitment table before ordering to ensure part number 78107-YF2-505 is the correct supersession for your unit
The volute case is the main pump housing that surrounds the impeller in a centrifugal water pump. Its spiral-shaped internal chamber converts the high-velocity water thrown outward by the spinning impeller into pressure, directing flow efficiently toward the discharge outlet. When the volute case is cracked, corroded, or worn, the pump loses the ability to build pressure effectively, resulting in reduced flow rate, poor priming, or complete loss of output — making it one of the most function-critical components in the pump body.
Part Details
| Part Number | 78107-YF2-505 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Volute Case |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | 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.
