For Peterbilt - 365 367 389 520 567 579 X12 X15 2013-2021. For Peterbilt - 320 X12 2017-2019. For Cummins X12 X15 Engine 2017-2021. Function: Effectively removes dust, pollutants or impurities from the fuel to avoid engine inhalation of contaminants, reduce engine wear and improve engine performance.
