If you're looking for a reliable, high-performing water pump for your garden, construction site or smallholding, the Honda WB20 Petrol Water Pump is a clear standout. Known for its power, durability and trusted Honda engine, this pump is built to handle demanding jobs with ease.
Whether you're draining water, irrigating land or tackling floods, the WB20 offers the performance and reliability professionals and homeowners need.
In this guide, we’ll look at why the Honda WB20 is such a popular choice across the UK.
Powerful and Efficient Honda Engine
At the heart of the WB20 is a Honda GX120 4-stroke engine. This engine is known for being easy to start, fuel-efficient, and low maintenance.
Key benefits of the GX120 engine:
- Quick and reliable starting
- Runs quietly and smoothly
- Low fuel consumption
- Complies with emission standards
It delivers around 4 horsepower, giving the pump enough power to handle heavy-duty jobs while staying compact and easy to transport.
Impressive Flow Rate and Pressure
The WB20 is designed to move water fast and efficiently. It’s ideal for transferring clean or slightly dirty water from one place to another.
Here’s what it offers:
Maximum flow rate: 620 litres per minute
Maximum head height: 32 metres
Suction lift: Up to 7.5 metres
This means it can push water uphill or across long distances with ease, useful for everything from large garden irrigation to site drainage and flood control.
Durable Build Quality
This pump is made to last, with materials chosen to withstand tough conditions.
What makes it durable:
- Cast iron volute and impeller for long life and resistance to wear
- Aluminium housing to keep the pump lightweight but strong
- Silicon-carbide mechanical seal for leak-free operation
The WB20 also includes a protective steel frame with anti-vibration mounts. This keeps the unit stable during use and protects it during transport.
Easy to Use and Maintain
One of the biggest advantages of the Honda WB20 is how user-friendly it is. It’s designed for quick setup and simple operation, even if you’ve never used a petrol pump before.
Useful features include:
- Recoil pull-start for easy ignition
- Oil Alert system that shuts the engine off if the oil is low
- Self-priming design, so you don’t need to manually prime the pump every time
- Lightweight at just 20kg, making it portable and easy to move around
Regular servicing is simple, and spare parts are easy to find thanks to Honda’s widespread support in the UK.
Great for a Wide Range of Uses
The Honda WB20 is versatile and reliable across different environments. That’s why it’s trusted by both professionals and homeowners.
Common uses:
Garden irrigation: Quickly water large lawns or fields
Construction sites: Pump out trenches, foundations or flooded areas
Agricultural settings: Transfer water for crops or livestock
Emergency use: Clear flood water quickly in bad weather
Pond or pool drainage: Empty or refill water features easily
With its strong build and flexible performance, the WB20 adapts to whatever job you throw at it.
Fuel Efficient and Cost Effective
The WB20 runs on regular unleaded petrol and has a 3.6-litre fuel tank, giving it a runtime of around 90 minutes at full flow.
Honda’s engines are known for fuel economy, so even with frequent use, running costs stay low.
At £384 including VAT from Henry Pumps, it offers outstanding value for such a well-built, professional-grade machine.
Why Contractors and Gardeners Love the WB20
Here’s a quick summary of why the Honda WB20 is so popular:
Fast water movement: 620 L/min flow rate clears or fills spaces quickly
Reliable performance: Honda engine runs in all weather
Easy to transport: Lightweight and protected in a crash frame
Built to last: Premium materials handle rough sites or outdoor use
Low maintenance: Simple servicing and long-lasting parts
It’s no surprise this model is a best-seller for both domestic and commercial users.
Frequently Asked Questions
Can the WB20 handle dirty water?
Yes, while it’s designed for clean or slightly dirty water, it includes a strainer that allows solids up to 8mm. For heavier sludge or sewage, a trash pump may be more suitable.
Is it hard to start?
Not at all. The Honda GX120 engine has a reputation for smooth, dependable starting, even in cold weather.
How often should I service it?
Basic maintenance like oil checks and filter cleaning should be done regularly, but overall it’s a low maintenance machine. A full service once a season is usually enough for regular users.
What hose size should I use?
This pump has a 2-inch inlet and outlet, so we recommend using compatible 2" hoses, such as MDS or wire armoured suction hose with Bauer-type couplings.
Order Your Honda WB20 Today
If you need a petrol water pump you can rely on, the Honda WB20 is a fantastic choice. It offers unbeatable performance for the price and its trusted Honda engine means you’ll be using it for years to come.
Order now from Henry Pumps and get free next working day delivery across the UK.