The carburetor is a strictly in accordance with the highest production standards, it is good at mixing fuel and air, keeping the engine running smoothly, and preventing the engine from running out of oil or overflowing. New Carburetor Replacement: This product is quite reliable and durable , provides new power to your ATV to help achieve the best engine performance. Fitment: Replace for YAMAHA WR400F 1998-2000 WR426F 2001-2002 WR450F 2003-2011, YZ400F 1998-1999, YZ426F 2001-2002, YZ450F 2003-2009Replace for YAMAHA Part # 5TG-14101-00-00, Replace for Keihin FCR40 FCR 40mm Flat side CarbReplacement part number #5TG-14101-00-00. Inner diameter (intake side): 40mm, out diameter (intake side): 49mm / outer diameter (air filter side): 55mm, you may need to adjust it slightly during installation. Easy to install, it is best to be installed by professionals (not included Description).
