Exmark Replacement Wheel Assembly - Replaces 103-0065 / 103-0071 / 103-3799 / 103-0069 / 103-5188 / 109-9127 Exmark Replacement Wheel Assembly (175-721) is pneumatic (air-filled) and includes an outer bearing race Replaces (OEM) Exmark part numbers 103-0065, 103-0069, 103-0071, 103-3799, and 103-5188 Fits Exmark Lazer Z models 7 1/4" hub; 1 3/4" inside diameter / bore 13-650-6 wheel size; Smooth tread