Gates FleetRunner Belt Tensioner - 38584 Part #: 38584 Line: GAT Gates FleetRunner Belt Tensioner 1 Year Limited Warranty Contact Surface: Smooth Backside Flanged: No Material: Steel Number Of Pulleys: 1 Pulley Outside Diameter (mm): 87mm Pulley Width (mm): 32mm Belt Type: Serpentine Pulley Width (in): 1-1/4 Inch Pulley Outside Diameter (in): 3-7/16 Inch Number Of Mounting Holes: 1 Number Of Pulley Grooves: 0 Pulley Inside Diameter (mm): 30mm Show More Show Less