ACDelco Automatic Belt Tensioner Assembly with Pulley

The ACDelco automatic belt tensioner assembly with pulley keeps the correct tension on your engine's serpentine or drive belt. Steady tension helps the belt drive the alternator, power steering pump, water pump, and air conditioning compressor reliably. This drive belt tensioner is also called a serpentine belt tensioner or an automatic tensioner assembly.

Key Features:

• Complete assembly with an integrated pulley, so it installs as one unit
• Spring-loaded automatic design adjusts to belt stretch and wear without manual adjustment
• Helps cut belt slip, squealing, and uneven belt wear
• Built to meet ACDelco's quality standards for fit, function, and durability
• Helps protect accessory drive components from premature wear

A worn tensioner can cause belt noise, belt slip, and accessory failure. Replacing it with a quality ACDelco assembly helps restore proper belt tension. Many technicians replace the belt and tensioner together as preventive maintenance. ACDelco is a long-established brand with a strong reputation in OE-quality replacement parts.