Product Info:Part: Drive Belt TensionerMaterial: PlasticHousing Material: AluminumBelt Type: SerpentineColor: BlackMounting Hole Quantity: 1Flanged: NoMounting Hole Diameter: 0.67 inches / 17 millimetersPulley 1 Flanged: NoPulley Quantity: 1Groove Quantity: 6Mounting Bolt Included: NoOutside Diameter: 76.2 inchesProduct Interchange:Manufacturer Part Number: 12603527Product Features: Helps keep drive belt at correct tension to help maintain proper functionParts are designed, engineered and tested to standards.Regularly updates production and service part designs to integrate new materials and technologiesAftermarket Replacement Parts:Each component undergoes.