Murray Climate Control Idler/Tensioner Pulley - 45904 Part #: 45904 Line: MRY Murray Climate Control Idler/Tensioner Pulley 1 Year Limited Warranty Belt Width (in): 0.937 Inch Belt Width (mm): 23mm Contact Surface: Smooth Pulley Outside Diameter (mm): 90mm Pulley Width (mm): 32mm Pulley Outside Diameter (in): 3-9/16 Inch Pulley Inside Diameter (in): 0.410 Inch Pulley Inside Diameter (mm): 10mm Show More Show Less