This is a genuine OEM replacement part sourced directly from MTD. An idler pulley is a specific part of the vehicles belt system that does not drive the belt, it one of a set of pulleys the drive belt rests on. The idler pulley is used to alter the path of the belt, this increases the tension in the belt, this keeps the belt on track, and helps increase the grip the belt has on the drive pulleys. This idler pulley is commonly used in small engines such as lawn mowers and sprayers. In order to install a new pulley you will need a socket for the drive bolts, you also may need a screwdriver.
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Manufacturer Part Number: 02004558