JOHN DEERE FLAT IDLER PULLEY (AUC16698)JOHN DEERE FLAT IDLER PULLEY (AUC16698) Flat idler pulley for many John Deere mower decks. Designed to contact the flat side of belt. Replaces AM121602 and AM106627 DIMENSIONS Effective Diameter: 127. 00mm Groove Width: 19. 00mm Bore Size: 17. 00mm FITS 180, 240, 245, 260, 265, 285, 320, 325, 335, 345, 355D, G100, GT242, GT262, GT275, GX255, GX325, GX335, GX345, GX355, LT133, LT150, LT155, LT160, LT166, LT180, LT190, LX172, LX173, LX176, LX178, LX186,