The Honda 78130-955-023 Mechanical Water Seal Assembly is a genuine OEM component designed for WA20 and WA30 water pumps. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring a proper fit and correct sealing function without rework or modification. This part fits both the WA20 and WA30 models — confirm your pump's serial number against the fitment table to ensure you are selecting the correct assembly for your unit. Sourcing part number 78130-955-023 direct from Honda's OEM catalog means you are getting the exact replacement the pump was built around.
Key Features
- Genuine OEM Sealing Integrity — manufactured to Honda's original specification, delivering the correct face-seal geometry and spring load that keeps pump fluid contained and prevents shaft leakage under operating pressure
- Direct OEM Replacement — engineered as an exact fit for WA20 and WA30 water pumps, replacing the original mechanical seal assembly without alteration
- Verify Serial Number Before Ordering — Honda updates parts at production breaks, so cross-reference your pump's serial number against the fitment table to confirm this assembly is correct for your specific unit
- Prevents Pump Damage — a failed mechanical seal allows water to migrate toward the impeller shaft and bearing, leading to accelerated wear and pump failure; replacing a worn seal at first sign of leakage protects the broader pump assembly
A mechanical water seal assembly is the dynamic sealing interface between a water pump's rotating impeller shaft and its stationary housing. It uses a spring-loaded face seal to maintain continuous contact between two precision-ground surfaces, keeping water from escaping along the shaft during operation. When this seal wears or fails, coolant or pumped fluid begins to leak at the shaft, which can quickly progress to bearing contamination and impeller damage — making timely replacement critical to keeping the pump running at full capacity.
Part Details
| Part Number | 78130-955-023 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Mechanical Water Seal Assembly |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Water Pump | WA30 | 1001586-9999999 |
| Water Pump | WA20 | 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.
