Heavy-Duty Flat Idler Pulley Replaces Cub Cadet 956-04129 956-04129C 756-04129B 756-04129C MTD 753-08171 756-04129B 756-04129C 956-04129 956-04129C Fits 38" 42" 46" 54" Decks 1 Heavy-Duty Flat Idler Pulley Replaces Cub Cadet 756-04129B 756-04129C 956-04129 956-04129C Replaces MTD 753-08171 756-04129B 756-04129C 956-04129 956-04129C Fits: MTD 38", 42", 46" and 54" decks ID: 3/8" / OD: 4 7/8" / Height: 1-1/8"