4832 x 1. Listed as XK140 Gearbox Rear Oil Seal at end of Rear Casing For JLS  Overdrive boxes in original Leather spec.  Last 4 available from stock in Leather as shown. (63 x 40 x 12.5mm) , Suits electric or Manual shifting overdrives. Original Ref. Number 7980. 65357

For cheaper rubber alternative SEE: 4834

NOTE: You should soak leather seals in Saddle / Neats Foot  oil until leather is fully saturated and supple, before fitting to get longest life from them. Do not fit when leather is dry.