2012 John Deere RSX 850i. For sale is a used OEM ignition coil pack off a 2012 John Deere RSX 850i. The parts are in great shape and work 100% fine. No damage or broken pieces. Please examine the pictures provided as it is the actual item you will be receiving and indicates the exact condition of the item. And if you don’t see what you’re looking for, don’t hesitate to ask. John Deere RSX 850i. John Deere RSX 860i. John Deere RSX 860E. John Deere RSX 860M. Contiguous United States – FREE. FM, GU, MH, MP, PR, PW & VI – VARIED. International – Cost varies by destination.