Fits: 2020 thru 2023 Chevy Silverado/GMC Sierra 2500HD/3500HD L5P Duramax Diesel

Ensure optimal performance and longevity of your vehicle's engine with the Genuine GM Drive Belt Tensioner (Part Number: 12735533). This is the updated version which includes a metal pulley, the original plastic pulley was prone to failure. This Secondary Tensioner maintains proper tension on the drive belt, preventing slippage and reducing wear. Engineered and tested to meet rigorous GM standards, this assembly offers reliability and durability for your Duramax's accessory drive system. 

Includes:

• Secondary Belt Tensioner with Metal Pulley