Order Includes: 2 x Idler Pulley. Part Number: 539103257, 510057101. Dimensions & Measurements: Width: 1.75" 44.45 mm, Inner Diameter: 5/8 " 15.8 mm, Outer Diameter: 5 3/4" 146.0 mm. Specs: 22 hp 16.2 kW 48" deck. We strongly suggest comparing the posted picture to the unit(s) that needs to be replaced..
