rear drive unit repair kit with ceramic bearings etronFix the Most Common Audi e tron Problem Save Time, Money & Stress If you own an Audi e tron, youve probably encountered a well known issue: leaking coolant seals and worn rotor bearings in the rear drive unit. Instead of paying thousands at the dealership or waiting weeks for repairs, you can solve the problem yourself by replacing the coolant seal and upgrading the rotor bearing quickly and effectively. Designed specifically for Audi e tron, this