Part Number: JC3T-14C689-AC, JC3T-14C689-AA, JC3Z14C689A, JC3Z14C689C. Fit For FORD F250SD PICKUP 17 tail lamp mounted, (radar unit for Blind Spot Alert), from 02/20/17. Fit For FORD F250SD PICKUP 18 tail lamp mounted, (radar unit for Blind Spot Alert).