The Honda 78311-YE0-003 Hose Coupling is a genuine OEM component designed for the WMP20 water pump. Sourced directly from Honda, this coupling is manufactured to the exact specifications of the original part it replaces, ensuring a proper connection between hose and pump every time. If you are dealing with a leak, a cracked fitting, or a damaged coupling that is costing you flow and pressure, this is the correct OEM replacement to restore your pump to working order.
Key Features
- Genuine Honda OEM Quality — manufactured to Honda's original specifications, delivering the same dimensional accuracy and material integrity as the part that left the factory, so the connection holds under pump operating pressures.
- Direct Replacement Fit — built specifically for the WMP20 water pump; this coupling drops into place without modification and restores the hose-to-pump interface exactly as intended.
- Confirm Your Serial Number — Honda updates parts at production breaks, so verify your WMP20 serial number against the fitment table before ordering to ensure part number 78311-YE0-003 is correct for your unit.
The hose coupling is the fitting that connects an external hose to the water pump's intake or discharge port, creating a sealed pathway for water to move through the system. A secure, leak-free coupling is essential to maintaining full flow rate and system pressure — a cracked or deteriorated coupling allows air infiltration or water loss that robs the pump of performance. When this fitting fails, the pump may lose prime, run inefficiently, or simply fail to deliver water where it is needed.
Part Details
| Part Number | 78311-YE0-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Hose Coupling |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WMP20 | 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.
