Autotecnica Belt Tensioner - HA1415870 Part #: HA1415870 Line: AUT Autotecnica Belt Tensioner Limited Lifetime Warranty Contact Surface: Smooth Flanged: Yes Material: Aluminum Number Of Pulleys: 1 Pulley Outside Diameter (mm): 80mm Pulley Width (mm): 26mm Belt Type: Serpentine Pulley Width (in): 1 Inch Pulley Outside Diameter (in): 3-1/8 Inch Number Of Mounting Holes: 2 Number Of Pulley Grooves: 7 Pulley Inside Diameter (in): 2.930 Inch Pulley Inside Diameter (mm): 74mm Show More Show Less