The Honda 78130-YH4-611 Mechanical Seal Assembly is a genuine OEM component designed for the WX10 water pump. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring a proper seal between the rotating pump shaft and the pump housing. This assembly is the correct replacement for WX10 pumps and should be verified against your unit's serial number using the fitment table before ordering.
Key Features
- Genuine OEM Sealing Integrity — manufactured by Honda to the same tolerances as the original, maintaining the shaft-to-housing seal that keeps water inside the pump and out of the engine compartment
- Direct OEM Replacement — engineered specifically for the WX10 water pump as a like-for-like swap using the original mounting configuration
- Verify Your Serial Number — Honda updates parts at serial number breaks, so confirm part number 78130-YH4-611 against your pump's serial number in the fitment table before installing
- Leak Prevention — a worn or failed mechanical seal allows water to bypass the pump shaft, reducing output pressure and risking water ingestion into the crankcase; replacing it promptly restores full pump performance
The mechanical seal assembly is the dynamic sealing interface between the rotating impeller shaft and the stationary pump body on the WX10 water pump. It uses a pair of precision-lapped mating faces — one rotating with the shaft, one fixed in the housing — held in contact by spring pressure to prevent water from escaping along the shaft. When this seal wears or cracks, the pump loses prime, output pressure drops, and water can migrate toward the engine bearings, causing serious secondary damage if left unaddressed.
Part Details
| Part Number | 78130-YH4-611 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Mechanical Seal Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WX10 | 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.
