Fits: 2011 thru 2016 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel

Eliminate the weak factory spring belt tensioner with Wagler Competition's . These are a must when running dual CP3 pumps on your serpentine belt setup.

Features:

• Reduce belt slip & thrown belts
• Mechanical design, will not wear like factory tensioner

Includes:

• Mechanical belt tensioner