This carburetor needle and seat kit is designed to restore proper fuel control and float operation on select Polaris Sportsman ATV models. The kit includes a 1.5 needle, matching seat, and rubber sealing O-ring to address common fuel delivery issues such as flooding, hard starting, or inconsistent idle caused by worn or leaking carburetor components. Designed as a direct replacement, the needle and seat install into the factory carburetor without modifications and restore original fuel metering function. This component is intended for service or repair of stock carburetors used on the Polaris models listed below and replaces Polaris part number 3131360. Includes: Carburetor needle Carburetor seat Rubber sealing O-ring Fitment: 2008–2010 Sportsman 300 2002–2014 Sportsman 400 2006–2007 Sportsman 450 2003–2005 Sportsman 600 2002–2006 Sportsman 700 2002–2008 Sportsman 6x6 Replaces Polaris Part Number: 3131360