This is a self fit kit with instructions, this system supports engines of a maximum capacity 18 litres from 5lt diesel engines with a 30 micron filter ideal for trucks

"Modern diesel fuel systems have become more precise, they operate with  higher pressures and supply a very accurate delivery of fuel, this enables better performance, improved fuel economy and reduced emissions. 

Water is one of the main causes of damage to fuel system components. It can cause parts to seize due to poor lubrication, it will also produce rust and errosion on internal metal areas which inturn causes pump and injector damage. This problem can be even more relevent on late model electronic and common rail vehicles. 

The Water Watch trap assembly will assist in detecting water that has made its way into the vehicles fuel supply. It will also detect very small amounts off free water, bringing on a LED warning light and audible warning."