John Deere mower deck pully, 136mm outside diameter. fits the following models:

102, 105, 107H, 107S, 115, 125, 135, 145, 155C, X110, X120, X125, X135R, X140, X155R, X165, X300, X300R, X304, X305R, X3110, X320, X324, X330, X340, X350, X350R, X354, X360, X380, X384, X390, X394, X500, X520, X530, X534, X540, X570, X580, X584, X590