This water pump cover gasket replacement is designed for Polaris Sportsman and Ranger models using the 400 and 500 four-stroke engines. The gasket installs between the water pump cover and engine case and is replaced whenever the water pump cover is removed during cooling system service. Manufactured to match factory dimensions for proper fit and sealing where Polaris part number 3086840 is used. Fits select Polaris Sportsman 400 and Sportsman 500 models as well as Ranger 500 models produced between 1996 and 2014. Always verify gasket location and compatibility using your Polaris parts diagram before ordering. Fitment 1996–2013 Sportsman 500 1996–2013 Ranger 500 2001–2005 Sportsman 400 (4-Stroke) 2011–2014 Sportsman 400 (4-Stroke) Replaces Polaris part number 3086840