RYCO DIESEL PRE FILTER KIT TO SUIT TOYOTA HILUX GUN123R GUN126R GUN136R 1GD-FTV TURBO DIESEL 2.8L I4Diesel pre filter kit protects late model common rail diesel engines against costly fuel injector failure. Installing a pre filter kit between the fuel tank and the OEM fuel filter will remove the majority of water and particle contamination. The diesel pre filter, also called fuel water separator, is used as a first line defence against filtering water and particulates from diesel fuel before it gets to the factory fuel filter. This filter kit is