The below engine parts Cummins gear 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 Idler Gear Assy 3084533 DCEC Idler Gear 3979182 Engine Barring Gear 3019152 DCEC Idler Gear 4959983 Accessory Drive Gear 207253 DCEC Idler Gear 4975001 Accessory Drive Gear …