Murray Climate Control Idler/Tensioner Pulley - 45017 Part #: 45017 Line: MRY Murray Climate Control Idler/Tensioner Pulley 1 Year Limited Warranty Material: Steel Pulley Outside Diameter (mm): 109mm Pulley Width (mm): 9mm Pulley Outside Diameter (in): 4-15/16 Inch Pulley Inside Diameter (in): 0.470 Inch Pulley Inside Diameter (mm): 12mm Show More Show Less