WIX Filters - Fuel Water Separators Fuel/Water Separator Filter Installation Kit. The kit may be used to convert cartridge type filters to convenience of spin-on or can be added as a supplemental filter for increased dirt removal capacity and water removal. Suitable for use on any size diesel or gas engine up to 400 H.P. Diesel Water Separator: Parts & Accessories | eBay A diesel fuel water separator is a modular unit which uses removable filters and pressure differentials to separate water from diesel fuel. This renders the fuel usable again by forcing diesel through a hydrophobic filter shield that repels all water, separating it out and then allowing it to drain out of the separator's shunts, which lets you get back to work in very short order.
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