The Ariens Company 21547077 Lawn Tractor V-Groove Idler Pulley helps maintain proper belt alignment and tension within compatible lawn tractor drive systems. Designed as a replacement V-groove idler pulley, it guides the belt along its intended path while supporting smooth rotation during operation. A properly functioning pulley can help maintain consistent belt movement and reduce sl... https://www.wholetoolbox.com/ariens-company-21547077-lawn-tractor-v-groove-idler-pulley/21547077.html