NEW 2012 to CURRENT Polaris PB4-60 Shaft Seal & O-ring Rebuild Kit (POL003) PB4-60 Polaris Booster pump shaft seal and o-ring rebuild kit Fits pumps with serial numbers after PB120111001 You get Shaft seal, Housing O'ring, drain plug oring this is for models requiring the 13/16" shaft seal not the 5/8"