Craftsman Deck V-Idler Pulley for AYP REPL 139123 (3/8" X 3") Description Deck Belt V-Idler Pulley. Fits AYP Riding Mowers.Replaces:AYP/ROPER/SEARS 139123AYP/ROPER/SEARS 121361AYP/ROPER/SEARS 532139123HUSQVARNA 532139123Dimensions:WIDTH: 13/16"ID: 3/8"OD: 3"HEIGHT: 1-1/8" Features: HEIGHT: 1-1/8" ID: 3/8" OD: 3" WIDTH: 13/16" Product Details: Package Dimensions: 3 x 1.2 x 1 inches Item Weight: 3.99 ounces Manufacturer: Rotary Corp Item model number: 139123 Is Discontinued By Manufacturer: No