Gearbox rear oil seal suitable for non overdrive and A-Type overdrive boxes as fitted to TR2-6. Also this seal can be fitted to the following cars; Stag, Dolomite, 2000 & 2500. When carrying out a gearbox rebuild it is critical to change all seals & gaskets. The rear of the gearbox is a common place for leaks to occur, before just changing the seal inspect the condition of the flange surface where the seal runs. This can wear and show signs of pitting, if this is the case a new flange will be required. 1 seal required per gearbox.