High Performance Billet Idler/Tensioner Pulley, for Electric Water Pumps

Works the best on high horsepower applications with electric water pump. 

• Precision machined billet aluminum pulley:  3-3/16" in Diameter.
• Guaranteed to be perfectly round and flat, unlike the polymer or stamped metal idlers
  
• Oversized high RPM bearings. 
• Bore / Bearing ID: 17mm (0.669")
• The side flanges measure 0.225" tall
• The diameter where the belt runs is 2.75"
  
• Overall width of pulley = 28mm (1.1").
• Width of area where belt rides= 21.5mm (0.850"). It is meant for a 6-rib belt.
• We stock the Black anodize finish, but the natural CNC machined finish (polished) is available and will drop ship to you.