ACDelco Idler/Tensioner Pulley - 38001 Part #: 38001 Line: ACD ACDelco Idler/Tensioner Pulley 1 Year Limited Warranty Contact Surface: Smooth Flanged: No Pulley Outside Diameter (mm): 90mm Pulley Width (mm): 31mm Bracket Included: No Pulley Type: Idler Pulley Width (in): 1-3/16 Inch Bushing Included: No Dust Shield Included: No Pulley Outside Diameter (in): 3-9/16 Inch Retainer Included: No Spacer Included: No Number Of Pulley Grooves: 0 Pulley Inside Diameter (mm): 17mm Show More Show Less