The Honda 78103-YG1-003 Inlet is a genuine OEM replacement designed for WT20 and WT30 water pumps. As a direct Honda OEM part, it is manufactured to the same specifications as the original component it replaces, ensuring a correct fit without the guesswork. This inlet is confirmed for the WT20 and WT30 pump models — verify your unit's serial number against the fitment table before ordering, as Honda supersedes parts at serial breaks.
Key Features
- Genuine Honda OEM — sourced directly from Honda, this inlet meets the same production standards as the part that left the factory with your pump, ensuring proper flow characteristics and connection integrity.
- Direct-Fit Replacement — engineered specifically for the WT20 and WT30 water pump platforms, this part installs in place of the original with no modification needed to the pump body or plumbing connection.
- Serial Number Verification Recommended — Honda updates parts at specific serial breaks; confirm your pump's serial number against the compatibility table to ensure part number 78103-YG1-003 is the correct supersession for your unit.
The inlet is the entry point through which water is drawn into the pump body. On centrifugal water pumps like the WT20 and WT30, the inlet directs the water flow from the suction hose into the impeller housing, where the rotating impeller accelerates it toward the discharge port. A cracked, corroded, or damaged inlet reduces suction efficiency, causes air leaks that break the pump's prime, and can result in reduced flow rates or a complete loss of pumping ability — making timely replacement essential to keeping the pump performing at full capacity.
Part Details
| Part Number | 78103-YG1-003 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Inlet |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WT20, WT30 | 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.
