Oil Seal, Differential Output Shaft, Set of Two. See #6 In Second Illustration. FITS 1974-1987 XJ6 and 1976-1993 XJS up to VIN 189099 With Inboard Rear Brakes, Drain Plug & 7 Hole Side Plate/Flange. If your output shaft seals are leaking, you would be better off getting the DIF300 bearing and seal kit. AAU8271 (JLM1264)