Murray Climate Control Idler/Tensioner Pulley - 45900 Part #: 45900 Line: MRY Murray Climate Control Idler/Tensioner Pulley 1 Year Limited Warranty Belt Width (mm): 12mm Contact Surface: Grooved Material: Steel Pulley Outside Diameter (mm): 88mm Pulley Width (mm): 20mm Pulley Width (in): 3/4 Inch Pulley Outside Diameter (in): 3-1/2 Inch Pulley Inside Diameter (in): 0.690 Inch Pulley Inside Diameter (mm): 17mm Show More Show Less