The below engine parts Cummins lock nut 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 No. Part Name Part No. Part Name Lock Plate 116982 Cummins Lock Nut 3910959 Lock Plate 149134 Cummins Lock Nut 3923041 Lock Plate 3001405 Cummins Lock Nut 3930683 Lock Plate 3004272 Cummins Lock Washer …