This is a complete kit to rebuild your Sportsman water pump. Kit includes the mechanical water pump seal, oil seal located behind the mechanical seal, sealing washer between the mechanical seal and the impeller, and lastly a new water pump cover gasket. Now also includes a custom seal driver to make installing the mechanical seal much easier! Fits all Sportsman 500 engines from 1996 to 2013. Also fits all Sportsman 400 (4 stroke) and 425 motors. Replaces Polaris part #3084837, 3084836, 3084942, and 3086840.