Carburetor Rebuild Kit NBR Rubber O-Rings & Gaskets have excellent resistance to Ethanol. Models with multiple carburetors include componenets to fix all. Standard jet sizes are included. Carburetor Kits Include: O-Rings Gaskets Jets Needl Screws Float Bowl Screws Float Valve Needles Fits: Kawasaki GPZ 500/EX500 1987-1993 GPZ 500/EX500R 1994-2009