Idler Pulley For MTD # 756-3105 , 956-3105Replaces Part Numbers MTD 756-3105 , 956-3105OEM Numbers : 756-3105 , 956-3105Type : Idler PulleyDescription : MTD 756-3105 & 956-3105 Flat Idler Pulley Fits 54" cut decks. ID: 3/8" Height: 1-3/8" OD: 5-3/4" MTD 756-3105 MTD 956-3105