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Honda WB20 2" Water Pump
Honda WB20 2" Water Pump


The Honda WB20 2″ Water Pump is robust, durable, equpped with professional features and powered by our commercial grade GX engine.


Category: Parts, Tools & Accessories

Stock Number: ZN-WB20

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Honda WB20 2″ Water Pump

Water somehow manages to get everywhere and sometimes it feels like there’s no escape. However, since our high flow rate pumps are especially designed to deal with large volumes of it which means any problem is quickly solved. They’re robust, durable and powered by our commercial grade GX engine. They’re equipped with a number of professional features, including the ability to deal with silt and sand meaning they’re perfect for use on construction sites or for clearing floodwater.

Manufactured with an abrasion resistant cast iron volute and impeller, these high flow pumps have specially designed vanes for larger discharge capacity. This means they can move up to 1100 litres a minute – that’s the capacity of an average-sized swimming pool in under an hour and a half. As well as their solid iron parts, these pumps use durable silicon carbide mechanical seals. Both of these features provide extra durability for handling water containing debris up to 6mm in size. There’s even a strainer to ensure nothing bigger gets through.

NB: Hosepipe does not come included.

Honda WB20 2″ Water Pump KEY FEATURES:

Oil Alert: Prevents engine damage by automatically shutting the unit down if the oil drops below a safe operating level

Cast Iron Volute and Impeller: The cast-iron volute and impeller give you superior durability for long life performance, even when pumping abrasive silts

OHV-4 Stroke Engine: Powerful and efficient with trusted reliability. Easy starting in all conditions with automatic decompression to reduce the pull force required

Anti Vibration System: Vibration can contribute to wear and tear on your machine. We’ve added straight engine rubber mounts to reduce mechanical stress on the entire unit.


Our products are built better to last longer. That’s why we can offer you a rock-solid warranty for domestic and professional use on our core range products, covering both parts and labour. The warranty also maintains the same value throughout the warranty period – meaning the last day of cover is exactly the same as the first.

*Subject to domestic use and following the service schedule

Available for home delivery or FREE click and collect from any of our five branches.



Maximum Output Capacity (L/min) 620
Inlet/Outlet Diameter Thread Type (mm/inches) 50/2-PF
Total Head (m) 32
Suction Head (m) 7.5
Pressure (bars) 3.2
Debris Size Capacity (mm) 6


Engine model GX120
Engine Type 4-stroke, OHV, **1 Cylinder
Displacement (cm³) 118
Bore × Stroke (mm) 60 X 42
Engine Speed (rpm) 3600 max
Engine Net Power (kW) 2.6
Cooling System Forced air
Ignition System Transistor
Oil Capacity (L) 0.6
Fuel Tank Capacity (L) 2
Operating Time 1h42 approx
Starter System Recoil
Sound Pressure Level at Workstation (dB(A)) 88
Guaranteed Sound Power Level (dB(A)) 102


Length (mm) 455
Width (mm) 365
Height (mm) 420
Dry weight (kg) 21

See our full Delivery & Returns information here.

We deliver to Mainland UK, excluding the Scottish Islands and Highlands. For any locations outside Mainland UK, including international shipping, please contact Antony Barrow at [email protected] for a cost estimate.


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