The below Cummins cylinder block engine parts 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. DCEC cylinder block 4934322 DCEC 4BT cylinder block 3903920 DCEC cylinder block 4946586 DCEC 6BT cylinder block 3928797 DCEC cylinder block 2874066 DCEC 6CT cylinder block 3971411 …