Description
High-Volume 2″ Water Pump for Irrigation, Drainage and Water Transfer
The Honda WB20 is a durable, high-volume water-transfer pump designed for moving large quantities of water quickly and efficiently.
Powered by Honda’s commercial-grade GX120 four-stroke engine, the WB20 delivers reliable starting, excellent fuel efficiency and dependable performance. It is ideal for irrigation, drainage, tank-to-tank transfer, emptying ponds and general water-moving jobs around farms, lifestyle blocks, construction sites and commercial properties.
High-Flow Performance for Bigger Jobs
With a maximum discharge capacity of up to 600 litres per minute, the Honda WB20 is built for jobs requiring significantly more water flow than a compact portable pump.
Its 50mm/2″ suction and discharge ports allow large volumes of water to move efficiently, while the maximum suction head of 8 metres and maximum total head of 32 metres provide dependable performance across a wide range of water-transfer applications.
Durable, Full-Frame Construction
The WB20 is designed for regular use in demanding conditions. Its heavy-duty full frame helps protect the engine and pump components while also providing secure handling when transporting the pump between jobs.
A durable cast-iron volute helps reduce pump-case wear, while rubber engine mounts improve stability, reduce vibration and minimise mechanical stress during operation.
Despite its robust construction and powerful output, the WB20 has a manageable dry weight of approximately 21kg.
Honda Four-Stroke Reliability
The WB20 is powered by Honda’s proven 118cc GX120 commercial-grade four-stroke engine.
The four-stroke design runs on regular unleaded petrol, eliminating the need to mix petrol and oil. It also provides excellent fuel efficiency, low emissions and dependable operation.
Honda’s Oil Alert system helps protect the engine by automatically shutting it down if the oil level falls below a safe operating level.
Highlights
- Pumps up to 600 litres per minute
- Commercial-grade Honda GX120 four-stroke engine
- 50mm/2″ suction and discharge ports
- Maximum suction head of 8 metres
- Maximum total head of 32 metres
- Durable cast-iron volute to reduce pump-case wear
- Heavy-duty protective full-frame construction
- Rubber engine mounts for improved stability and reduced vibration
- Oil Alert low-oil protection system
- Self-priming centrifugal pump design
- Runs on regular unleaded petrol
- No petrol and oil mixing required
- Ideal for irrigation, drainage and high-volume water transfer
Specifications:
| Pump Type | Centrifugal volume pump |
| Engine | GX120 |
| Displacement (cc) | 118 |
| Fuel Type | Unleaded |
| Oil Alert | Yes |
| Total Head (m) | 32 |
| Suction Head (m) | 8 |
| Max Discharge Capacity | 600 litres/min |
| Self Priming Time (at 5m) | 110 sec |
| Fuel Consumption | 1 l/hr |
| Mounting | Rubber |
| Hose Band/Stainer | Yes |
| Fuel Tank Capacity | 2.5l |
| Discharge Port Diameter (mm) | 50 |
| Suction Port Diameter (mm) | 50 |
| Length (mm) | 455 |
| Width (mm) | 365 |
| Height (mm) | 420 |
| Dry Weight (kg) | 21 |
Why Buy Your Honda Pump From City Honda?
When you purchase your Honda pump from City Honda Manawatu, you’re getting more than a quality water pump—you’re also getting trusted local advice, workshop support and ongoing help from an experienced Honda team.
- Every pump is checked and test-run before dispatch
- Backed by Honda’s 4-year domestic warranty*
- Nationwide support through Honda’s authorised service network
- Local servicing and parts support from City Honda Manawatu
- Friendly advice to help you choose the correct hoses, fittings and accessories
- Optional complete 2″ hose kits available separately
Powered by Honda’s dependable GX120 four-stroke engine, the WB20 is an excellent choice for irrigation, drainage and high-volume water transfer. Whether you need the pump on its own or want help building a complete ready-to-use setup, the City Honda team can make sure you get the right equipment for the job.
Please note: This listing is for the Honda WB20 water pump only. Suction hose, discharge hose, camlocks and additional fittings are sold separately.
The WB20 is a water-transfer pump and is not designed to replace a dedicated trash pump when pumping water containing larger solids or heavy debris.
*Warranty terms and conditions apply.


