DEF Filters

DEF filters, also called urea filters, protect the DEF pump and dosing system on SCR-equipped diesel engines and are a regular maintenance item. We list DEF filters from Fleetguard, Mann+Hummel, Bosch and Detroit Diesel for Cummins, Detroit, PACCAR, Volvo and Mack engines, each with the OEM numbers it replaces. Search the number on your old filter to find the match.