Your rear differential on the EZGO, Columbia, or Harley you are driving is filled with liquid. A dense weight gear oil usually. Unless it's electric, then a standard 30 weight motor oil is more than enough. Either way, keeping that liquid in place is a vital task. Things like the golf cart Rear Axle Seal and gasket for the differential are crucial in making that happen. If one were to fail, depending on how it did it, you could end up with a slow leak all the way to a dripping mess. When a seal goes faulty, it can not only leak oil. It will sling it all over this green earth as you drive. If you notice some new lines in your driveway and street, you may be the culprit.This golf cart axle seal will work for the Columbia and Harley models 1978 and up. Then also for the EZGO 1978-1993 2-cycle gas models and all EZGO 1978 and up electric models. Call Buggies Unlimited and get one coming today.