The Honda 78313-YB3-000 Hose Coupling Gasket is a genuine OEM replacement designed for WD20 and WD30 water pumps. As a direct Honda OEM component, this gasket is produced to the same specifications as the original part fitted at the factory, giving you a confident, no-guesswork replacement. This part is the correct choice for WD20 and WD30 pumps — always confirm your unit's serial number against the fitment table before ordering, as Honda periodically supersedes parts at serial breaks.
Key Features
- Genuine Honda OEM — sourced directly from Honda, so you get the same gasket that shipped with your pump originally, with no risk of mismatched dimensions or improper sealing.
- Proper Coupling Seal — a correctly functioning hose coupling gasket maintains a leak-free connection between the hose fitting and the pump body; a failed or compressed gasket allows water to escape at the coupling joint, reducing pump output and wasting prime.
- WD20 and WD30 Fitment — confirmed for Honda WD20 and WD30 water pumps; cross-reference part number 78313-YB3-000 with your pump's serial number to ensure this is the correct supersession for your unit.
The hose coupling gasket sits at the connection point between the suction or discharge hose fitting and the pump body, creating a watertight seal that prevents leakage under operating pressure. Without an intact gasket, the coupling joint cannot hold a proper seal, which can cause the pump to lose prime, deliver reduced flow, or allow water to escape around the fitting. Replacing a worn or damaged gasket with a genuine Honda part restores the coupling to its original sealed condition, keeping the pump performing as intended.
Part Details
| Part Number | 78313-YB3-000 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Hose Coupling Gasket |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WD20, WD30 | 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.
