General description The Engine Belt Tensioner Assembly is designed for various Buick, Chevrolet, Oldsmobile, Pontiac, and Saturn models. It ensures optimal performance of the serpentine belt system, maintaining proper tension for efficient engine operation. Technical specifications Part Numbers: 12563083, 24503851, 24507667, 24507684, 419-104, 419104, 49245, 38104, 49281 Maximum Belt Width: 20mm Number of Pulley Bearings: 1 Number of Pulleys: 1 Pulley Bearing Diameter: 40mm Pulley Bearing Inner Diameter: 17mm Pulley Diameter: 82.5mm Pulley Groove Quantity: 6 Pulley Width: 28.5mm Tensioner Rotation: Anti-clockwise Color: Silver Material: Metal Compatibility and accessories Fits for RENDEZ-VOUS (2002 - 2007) Fits for TERRAZA (2005 - 2006) Fits for UPLANDER (2005 - 2006) Fits for VENTURE (1999 - 2005) Fits for ALERO (1999 - 2004) Fits for CUTLASS (1997 - 1999) Fits for SILHOUETTE (1999 - 2004) Fits for G6 (2005 - 2006) Fits for GRAND AM (1999 - 2005) Fits for MONTANA (1999 - 2006) Fits