Kit includes head gasket, base gasket, intake boot o-ring and exhaust gasket to rebuild the top end of your Polaris Sportsman 335. Don't ever re-use old gaskets when rebuilding your engine! High quality non-asbestos materials are used in kit. Includes all of the following top end gaskets shown in the photo including: Head Gasket (Replaces Polaris #3085829) Base Gasket (Replaces Polaris #3085827) Cam Adapter O-Ring (Replaces Polaris # 3084867) Exhaust Gasket (Replaces Polaris #3085075) Valve Cover Gasket (Replaces Polaris # 3085831) Cam Cover Gasket (Replaces Polaris # 3084869 and 3086200) Tensioner Gasket (Replaces Polaris # 3084922) This gasket kit fits the following models: 1999-00 Sportsman 335