Automatic Belt Tensioner Main Drive
fits for:
Chevrolet Silverado 1500 4.8L 1999-2008
Chevrolet Silverado 1500 5.3L 1999-2008
Chevrolet Silverado 1500 6.0L 2003-2008
Chevrolet Silverado 2500 5.3L 1999-2000
Chevrolet Silverado 2500 6.0L 1999-2008
Chevrolet Silverado 3500 6.0L 2001-2008
OEM: 12554027, 12580162 (GM)