Polaris Sportsman 400 4x4 ATV Front Wheel Bearing Kit 2001-2004This ATV kit incudes all the bearings and seals needed to replace one wheel on the following application: Polaris Sportsman 400 4x4 ATV Front Wheel 2001 2004 The ATV Bearing Kit includes the following: Bearing 2pc Seal 1pc O Ring 2pc If you need to replace both of your front wheel bearings you will need to order two of this kit.