Polaris 250 Trail Boss (1989-1999) / 250 Trail Blazer (1990-1995) TUNE UP KIT w/ Air Filter, Fuel Filter, Spark Plug, & Carburetor Rebuild Kit Each Kit has a Air Filter (500B), Fuel Filter (101), Spark Plug (BR8ES), and a Carburetor Rebuild Kit (500) Carburetor Kit contains everything you need to rebuild one Polaris carburetor. Includes: Gaskets, O-Rings, Needles, Seats, Springs, Float Valve and Jets Built to Polaris Standards Ships Priority USPS Fast and Free