Polaris Sportsman, Xpedition, Scrambler, Magnum, Trail Boss, Trailblazer ATV Rear Brake Caliper Seal Kit 2201872 Genuine Polaris Part Number 2201872 - seal kit for Polaris ATV, Quads, Off Road Vehicles. See fitment in description for compatibility. If your machine was made between 2001 and 2003 call for compatibility. Genuine Polaris Part. Any questions please contact us.