V-Belt Idler Pulley, B Belt Type, 4 In O D

V-Belt Idler Pulley, Bearing Type Ball, For V-Belt Type Classical, Bore Diameter 17 mm, Face Width 0.86 in, For Belt Trade Size B, Outside Diameter 4 in, Pulley Material Fiberglass-Reinforced Nylon, Bearing Material Chrome Steel, Bearing Number 6203-2RS, Features ABEC-1 Bearing, For Use With Self Adjusting Belt Tensioner, Material Fabrication Molded, Material Grade 6/6, Maximum Operating Temperature 225 Degrees F