FASS Fuel Systems Drop-In Series Diesel Fuel System for 2010-2018 RAM Cummins (DIFSRAM1001). FASS Fuel Systems Drop-In Series Diesel Fuel System for 2010-2018 RAM Cummins | Part No: (DIFSRAM1001). The FASS Drop-In Series Diesel Fuel System was engineered by FASS to be the most effective filtration solution for the Cummins.
