Description of ACDelco Professional 39155 Drive Belt Tensioner Assembly incl. Pulley
Ensures proper belt tension, alignment, and damping for superior performance. Patented vibration damping system increases tensioner, belt, and accessory component life for long lasting use. Torsional round spring design provides consistent tension and does not allow contamination for enhanced durability. Provides full line coverage for domestic, import, and heavy duty applications. Professional, premium aftermarket replacement. Provides the performance and dependability you expect from ACDelco. Manufactured to meet expectations for fit, form, and function.