The Racor 100 Series features a variety of compact sizes to fit the most cramped engine compartments. All units feature 1/4"-18 NPTF inlet and outlet fuel ports and a unitized mounting bracket. All 100 Series assemblies feature spin-on, high-capacity, Aquabloc II replaceable filter elements which stop water, remove solid contamination (model 110A is a cartridge element and is available with a 10 micron element only). Filtration needs should be based on application, fuel quality, operating climates, and maintenance schedules. All units feature spin-on contaminant collection bowls. Clear bowls will not discolor from alcohol, additives, or UV light and have a leak-proof, positive seal drain for easy servicing (except the 110A). Water and contamination levels can be seen easily at a glance.. 120AS: Offers reliable protection for smaller diesel and gasoline engines used in generator sets, pressure washers, and other equipment. Max pressure 70 psi.