Item description for 11-16 Sierra 2500 Duramax LML Diesel Accessory Belt Idler Pulley SMOOTH GATES

New Gates pulley. This is a smooth metal pulley and mounts on the aluminum bracket (this is not for the tensioner). Fits the following:

11-16 Sierra w/ LML Duramax 6.6L Diesel
11-16 Silverado w/ LML Duramax 6.6L Diesel