These are genuine Parker Racor filters with the Aquabloc water repelling treatment, ensuring that your Parker Racor filter operates to maximum efficiency. Besides removing asphaltenes, water, gums, and varnishes, Aquabloc filters out tiny particles of dirt and algae from diesel fuel. Aquabloc filters have polymer end-caps that will not corrode, ever. - With an Aquabloc replacement filter, you get a complete kit with all the seals you need. And not just any seals, but specially-formulated, Racor-engineered seals. Always carry extra Racor fuel filters as one tankful of dirty fuel can quickly clog a filter. Racor Replacement Fuel Filter Element: - Fits Racor 100 Series - 10 micron - Includes replacement