Big Bore Racing Carb Kit from Zenoah, Designed for use with Zenoah watercooled (PUM) engines. Larger Venturi adds more power that has been proven by Zenoah. Contains items shown in photo - Walbro WT-1027 carburetor (very similar to WT-257), bolts, washers, gaskets, and funnel. Brand new in box from original walbro aftermarket division. Zenoah Part #966783401Zenoah Parts # 966783401Includes the following:1 x Walbro WT-1027 carburetor2 x Bolts2 x Washers2 x Gaskets1 x Funnel