• ACDelco Professional Automatic Belt Tensioners And Pulleys Primary Image
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  • Provides proper belt tension, alignment, and damping for excellent performance
  • Torsional round spring design provides consistent tension and does not allow contamination for maximum durability
  • Provides full line coverage for domestic, import, and heavy duty applications


ACDelco Professional Timing Component Kits And Oil Seals
ACDelco Professional Heavy Duty Belt Tensioners And Pulleys
ACDelco Belts And Hoses

The ACDelco Professional, premium aftermarket Automatic Belt Tensioner is designed for Accessory Belt Drive Systems (ABDS) that require an automatic belt tensioner. It provides proper belt tension, alignment, and damping for optimum performance and provides full line coverage for domestic, import, and heavy duty applications. This premium aftermarket replacement automatic belt tensioner is manufactured to meet your expectations for fit, form, and function.


Limited Lifetime Warranty*: ACDelco offers a Limited Lifetime Warranty on specific service parts. General Motors warrants to the purchaser that it will replace these specific Genuine GM Parts and ACDelco parts for all manufacturer defects in workmanship and manufacturing. Effective on parts purchased April 1, 2018 and later to the original retail purchaser. Contact seller for limited warranty part details, qualifications, and possible labor coverage.


Learn more about ACDelco warranties:


Are these pulleys durable?
Yes, pulley bearings meet original equipment and are designed for application specific speed and load requirements.

Are these pulleys interchangeable?
No, always use the pulley called out in the ACDelco Catalog for your application.

Will I know immediately if my pulley or tensioner breaks?
Yes, when your idler pulley or belt tensioner breaks, the belt no longer powers key systems within your vehicle. For example, the belt provides power to the alternator, power steering and water pump, so you may notice lights on your vehicle flickering due to the drain on your alternator, eventually leading to complete power loss, or your power steering no longer operating, or the temperature gauge reading increasing dramatically.

Are these tensioners durable?
Yes, a patented vibration damping system helps maximize not only tensioner life but also belt and accessory life as well.




ACDelco Belts
ACDelco Lubricants
ACDelco Water Pumps
ACDelco Thermostats And Caps

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