87GB46A
Accessory Drive Belt Tensioner Assembly
Mack

This tensioner assembly maintains proper tension on the accessory drive belt, which is essential for the reliable operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor. Its precise tensioning prevents belt slippage and reduces wear, extending the lifespan of the belt and associated components. Designed for durability, it withstands the vibrations and temperature fluctuations typical in heavy-duty engines. An effective tensioner ensures smooth power transfer and optimal accessory performance, contributing to overall engine efficiency. Easy to install and adjust, this assembly simplifies belt maintenance and replacement procedures. Regular inspection and proper tensioning of the drive belt are crucial for preventing unexpected breakdowns. Source One Parts Center offers this critical component to help keep your truck’s accessory systems functioning flawlessly.