The John Deere M83459 is a genuine OEM high-lift mower blade designed for optimal cutting and bagging performance on various John Deere lawn tractors and zero-turn mowers. Measuring 432 mm in length, 63.5 mm in width, and 3.8 mm in thickness, this durable blade features a 20.6 mm center hole. It is a direct replacement for models including STX38, X300, X304, X305R, X310, X320, X324, X330, X340, X350, X350R, X354, X360, X370, X380, X384, X390, X394, X500, X520, X530, X534, X540, X570, X580, X584, X590, Z335E, Z335M, Z345M, Z345R, Z355E, Z355R, Z375R, Z525E, Z535M, Z535R, Z540M, Z540R, Z545R, Z550M, Z560M, Z570R, Z580M, Z580R, Z590M, Z590R, Z625M, Z640R, Z645R, Z655M, Z665R, and many others. This blade is also known to supersede part number AM137757.