This Grease Seal retains the bearing lubricant and enhances the performance and life of the bearing by reducing the ingress of dirt, oil and water that can cause damage to the bearing and other vehicle components. This item is often used in front suspension work, including front axle, parking brakes, hydraulic brakes, hub assemblies, front disc brakes, discs and rotors, calipers, spindles and shock maintenance. Used on 1989-current e-z-go gas and electric marathon: pc4x, pc4gx, pc4gxi, txt, medalist, 4/6-passenger shuttle, st express, st sport, st 350, st 480, st sport ii, st sport 2+2, 804, 835, 2/4/6-passenger bellhop. Woods boundary mav 400, workhorse-mpt (multi-purpose truck) 800/1000/1200, clays car, refresher 1200, and cushman 2200 models. Prevents leakage and the access of fluids and dirt to minimize damage and failure of the bearing and other components Grease seals should be inspected at regular service intervals and replaced when they show wear or excessive grease build-up Not used on 3 wheel models, this item is used on 4-wheel front hubs and should be replaced anytime the 4-wheel front wheel bearings are replaced