The Ariens Company 07327800 Lawn Mower Flat Idler Pulley helps maintain proper belt movement and tension for smooth equipment operation. This flat pulley rotates with the belt system to support consistent belt tracking and power transfer. Its 4.00-inch diameter, 0.38-inch bore, and 2.00-inch width provide the specified dimensions for proper installation and operation. Replacing a worn... https://www.wholetoolbox.com/ariens-company-07327800-lawn-mower-flat-idler-pulley-4-x-0-38-x-2/07327800.html