This is a complete kit to rebuild your Polaris Sportsman 400 or 500 water pump. Kit includes the following components: - Billet Aluminum water pump impeller. Replaces Polaris part # 3084935 - Mechanical water pump seal. Replaces Polaris part # 3084837. - Oil seal (located behind the water pump seal). Replaces Polaris part # 3084836. - Sealing washer (located behind the impeller). Replaces Polaris Part # 3084942. - Water pump cover gasket. Replaces Polaris Part # 3086840. This water pump rebuild kit fits all 1996-13 Sportsman 400 (4 stroke only) and 500 models. This is everything you need to completely rebuild the water pump!