ZCK27 Basic Zenith Carburetor Kit for Massey Ferguson Tractor MF135 40 135 165 Also fits: Massey Ferguson Industrial Construction Model: 40 (w/ Perkins Engine & Zenith Carburetors) Kit Contains: Float Valve, Adjusting Needle, Gaskets, Seals, Washers & Float Pin Replaces Part Number: ZCK27