The Ariens Company 21543898 Lawn Mower Fan/Pulley Kit supports smooth power transfer within compatible lawn mower systems. This replacement kit works with the mower belt and related drive components to help maintain proper rotation and consistent operation during use. The pulley helps guide and engage the belt correctly, while the fan component supports the intended movement of the as... https://www.wholetoolbox.com/ariens-company-21543898-lawn-mower-fan-pulley-kit/21543898.html