EZGO Rear Axle Bearing 6004-RS Used on 2001-current e-z-go electric rear axles and is compatible with 1978-current columbia-harley davidson gas and electric g1 vehicles, and 1978-1981 yamaha gas and electric g1 vehicles The bearing supports vehicle weight and allows wheels to rotate with minimum function; never ignore any cyclic, grinding, rumbling or chirping noises from your vehicle's bearings since it's highly likely the bearings need to be immediately replaced Measures: 20mm by 42mm by 12mm