87GB45C
Accessory Drive Belt Tensioner Pulley
Mack

This tensioner pulley maintains optimal tension on the accessory drive belt, which is essential for the proper operation of engine-driven accessories. Its high-quality bearing ensures smooth rotation and minimizes noise, while its durable construction withstands the harsh conditions of engine compartments. Proper tensioning prevents belt slippage, reduces wear, and extends the lifespan of the belt and connected components. Easy to install and adjust, this pulley is a critical part of the accessory drive system, contributing to engine efficiency and reliability. Regular inspection and maintenance of the tensioner pulley help prevent unexpected failures that could lead to costly repairs. Source One Parts Center offers this vital component to support your truck’s accessory belt system and overall engine performance.