OEM Cummins ISX EGR ECM ECU 450HP P/N: 3684009 CM870 ESN: 14045162 CPL8520 Tested. Used Takeoff Unit - Carefully Removed From Running Salvage Vehicle. Bench tested to verify condition.
Unit Pictured is the one you will receive. Other P/N That Will Work.
3682729, 3682729RX, 3682729NX, 3684009, 3684009NX.