DODGE 1500 PICKUP 19-20 Transfer Case; new style (6 lug wheel), (RH dash), limited slip differential (opt DSA), model BW4811 (electric on-demand shift). DODGE 1500 PICKUP 19-20 Transfer Case; new style (6 lug wheel), (RH dash), non-locking differential (opt DS8), model BW4811 (electric on-demand shift).