The below engine parts Cummins air filters are for the 4BT3.9/6BT5.9/6CT8.3/6LT8.9/ISDe/ISLe/ISZ/M11/NT855/ KT19/KT38/KT50/ISF2.8/ISF3.8/ISM11/QSM11 series Cummins engine. Part Name Part No. Part Name Part No. CCEC Air Filter AF1969M DCEC air filter 3977534 CCEC Air Filter AF25270 DCEC air filter 3281238 CCEC Air Filter AF25271 DCEC air filter 4938598 CCEC Air Filter …