Water Pump Assembly
This hose is cataloged within the Water Pump assembly, alongside the pump, pump cover, thermostat, O-ring, water hose clamp, and related sealing hardware.
Honda · Genuine OEM Part
Honda part 19503-KWN-900 is officially identified as HOSE C, WATER. It is listed in the water pump assembly as item 6, where it serves as one of the hoses associated with the engine cooling circuit and water pump components.
The Honda parts listing specifies one hose for the assembly. Its exact Honda part number and catalog designation help distinguish it from other water hoses and related clamps, O-rings, and pump components shown in the same assembly.
This hose is cataloged within the Water Pump assembly, alongside the pump, pump cover, thermostat, O-ring, water hose clamp, and related sealing hardware.
The official Honda designation is HOSE C, WATER, and the manufacturer part number is 19503-KWN-900. Those details provide the clearest identification when ordering a replacement.
The parts listing specifies a quantity of one for the water pump assembly. The hose is shown as diagram reference 6 in the applicable parts-fiche layout.
Honda parts-fiche data places 19503-KWN-900 under the Water Pump section rather than listing it as a generic radiator hose. The same diagram identifies it as item 6 and shows it with the water pump, thermostat, O-ring, clamp, and other related components. This placement establishes the part's role as a dedicated hose within that cooling-system assembly, while the catalog name distinguishes it from separately listed water hoses and bypass hoses.
| Honda Part Number | 19503-KWN-900 |
|---|---|
| Honda Catalog Description | HOSE C, WATER |
| Part Type | Hose |
| Assembly | Water Pump |
| Quantity per assembly | 1 |
| Diagram reference | 6 |
| Model | Type | Model Years |
|---|---|---|
| ADV150A | Motorcycle | 2021–2023 |
| PCX125 | Motorcycle | 2011 |
| PCX150 | Motorcycle | 2013, 2015–2020 |
| PCX150A ABS | Motorcycle | 2019–2020 |
Model applications as listed in Honda's dealer parts catalog for part number 19503-KWN-900.
Verify the Honda OEM part number for your specific model before ordering.
Compatible motorcycles, ATVs & side-by-sides
Verify your vehicle's model, year and specific configuration before ordering.