Advanced Efficiency Fuel Water Separators are designed to eliminate 100% free water and 90% emulsified water along with smaller contaminates while helping extend the life of your secondary filter and expensive injectors. Efficiency Rating: Advanced Efficiency Cat Fuel Water Separators are built to extend the life of your secondary filter and precision fuel system components. LOAD, HAUL, DUMP R2900G, R1700G  MARINE PRODUCTS 3412E, C32  UNDERGROUND ARTICULATED TRUCK AD30, AD55, AD45B