Upgraded Viton differential output shaft seal for all Minis except Hardy-Spicer style axles, which were just fitted to “S” and early automatics. Fits all later pot joint equipped automatics. These will work with pot joints, rubber couplings, or flange mounted Quinten-Hazel plastic style couplings.
 
A failed diff seal will result in a very large oil leak, so be sure to replace them if you see evidence of failure. If you are tired of the standard seal not lasting consider these Viton ones.
 
Sold individually.