Diesel Watch Water Australian Pre-Filter protection against Diesel Fuel Contamination Damage

  • $495.00
    Unit price per 
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Diesel Water Watch Fuel Contamination Detection and Trap 

Protect your diesel fuel system from contaminated diesel with our
Pre-filter diesel Water Watch kit.

Water Watch is an electronic diesel fuel contamination detection and trap that will set off an alarm if as little as 5ml of water is found in your fuel and remove it together with other contamination into the glass bowl where it can be removed.

This is an Australian designed.  It is manufactured and sold in Australia by an Australian Company.   It was designed for Common Rail Diesel engines, but it can be used in any diesel application.

The diesel Water Watch unit can be purchased in two sizes with the application depending on the pressure in the fuel system, flow rates and space in the engine bay. The electrical harness and alarm system are included with the Water Watch unit.

Our vehicle specific bracket kits are sold in addition to the Water Watch unit and  include a robust powder coated mounting bracket kit, quality fuel hose, bolts, instructions etc

Water Watch is easily fitted before the original filter, and will continually check the incoming fuel for water.

Will warn of water in the fuel supply with audible and visual warnings.

Water Watch can be fitted to any diesel engine.

Mounting bracket kits available to suit a large range of vehicle applications

This system will protect the vehicle's fuel system by removing and warning of even small amounts of water in the fuel supply.

The Real "Water Watch" Protection System

Lifetime warranty!

Accurately detects water in diesel fuel, at high flow rates of modern Diesel Fuel systems 5ml will set off the audio and visual alarm.

Note:  Common Rail Fuel Systems typically have high flow rates of 50 -60 litres per hour through the system for cooling and lubrication.

Protecting your Common Rail Diesel Fuel System from costly contamination repairs
Australian designed, Australian built and backed by Australians


  • No filters to restrict fuel flow or vehicle performance.  Filters can’t stop or separate water under even light pressure or suction.

  • Water Watch has a patented electronic sensor, not a float or electrode system, so function is not reduced by the presence of particulates or sludge in the fuel collecting around the water detector.  

  • Patented Diffuser system is designed to effectively remove water and contaminants from fuel at high flow rates.  The Sensor is easily removed to drain off contaminants held in the glass bowl away from the main fuel flow.

  • It’s not a sedimenter, so you’re not relying on the water and particulates to settle into a bowl for the alarm to work (which, is often too late for your fuel system; contamination happens very quickly with the high flow rates in Common Rail Diesels).

  • All components of Water Watch are designed to operate at high temperatures, high pressures and high fuel rates used by Common Rail Diesels.  No distortion or malfunction of components.  Water Watch components have a lifetime guarantee.

  • No regular maintenance or replacement required.  Visual checks will let you know the quality of your fuel and you can see any contamination. 

  • Water Watch is available to fit any common rail diesel fuel system from small cars through to larger vehicles, including industrial and marine applications.

  • Bracket kits are available to fit most popular common rail diesels – making Water Watch very easy to install.

Specialist Tools Australia (Division Of Responsive Engineering Australia Pty Ltd) is an Australian company dedicated to finding innovative solutions to complex problems. We develop, manufacture and Import specialist products and diagnostic tools for the automotive industry and pride ourselves in providing you with a quality product that will get the job done the first time.

Questions  We encourage all prospective buyers to message via eBay and ask any technical questions you may have on any of our tooling products.

Shipping  Free shipping within Australia, All parcels will be sent via regular Australia Post. Express post available upon request, additional charges will apply. International Shipping is also available.