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Welcome to Calvin'sOnline.com - Your Diesel Performance Specialists

Fass Fuel Systems

If you are looking for diesel performance parts to improve your truck's engine performance, increase fuel milage and extend the life of your fuel injection system, you are looking for FASS fuel systems. FASS which stands for Fuel Air Separation System improves engine performance by helping to insure that the highest quality diesel fuel is delivered to your engine, through a two step filtration process. We carry FASS Duramax, Cummins and Powerstroke fuel pumps along with FASS fuel pump filters. Check out our selection and chat with us if you have any questions.

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