Mr Mower Parts Flat Idler Pulley is a high-quality replacement component designed for use on Compatible with MTD Cub Cadet and compatible lawn mowers. This pulley replaces Compatible with MTD part numbers 756-0117 and 956-0117 and is engineered to restore proper belt tension and smooth deck operation. In addition to Compatible with MTD applications, this pulley cross-references several OEM numbers including Compatible with AYP/Roper/Sears 583768601 and 4933H, Bolens 171-5340, and Simplicity/Allis Chalmers 1668477 and 1668477SM. It is compatible with MTD models 440, 588, 586, 552, 450, 225, and 550 series mowers. This flat idler pulley features a flanged design to help maintain correct belt alignment and prevent slippage during operation. A worn or damaged idler pulley can cause belt misalignment, excessive vibration, uneven cutting performance, and premature belt wear. Replacing the pulley helps restore smooth blade engagement and optimal mowing efficiency. Manufactured to OEM specifications, this pulley ensures dependable fitment and durability under standard residential and commercial mowing conditions. Always confirm your model number and part number compatibility before purchasing to ensure proper installation.