ACDelco 38161 Automatic Belt Tensioner Assembly with Pulley

The ACDelco 38161 is a professional-grade automatic belt tensioner assembly designed for accessory belt drive systems that require precise tension control. This complete assembly includes both the tensioner mechanism and pulley, ensuring optimal performance of your vehicle's serpentine belt system.

Key Features:

• Patented vibration damping system absorbs extreme vibration to extend the life of the tensioner, belt, and accessory components
• Torsional round spring design maintains consistent belt tension throughout operation and prevents contamination
• Ensures proper belt tension, alignment, and damping for superior accessory drive performance
• Manufactured to meet GM specifications for fit, form, and function
• Suitable for domestic, import, and heavy-duty applications

ACDelco Gold (formerly Professional) parts are engineered to deliver reliable performance and are backed by General Motors quality standards. This belt tensioner assembly maintains the correct amount of tension on the serpentine belt, which is critical for proper operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor.