【Note-1】 The Driveshaft Only Fits The 4WD(Four Wheel Drive) Automatic Transmission Model. 【Note-2】 For Ram 2500 2013, The Driveshaft Fits The Model With Serrated Pinion Flange. 【Note-3】 For Ram 3500 2013, The Driveshaft Fits The 68RFE Transmission Model Wi