Dayco Automatic Belt Tensioner 89423 Housing type The control arm serves as

The control arm serves as the interface between the chassis and wheel assembly

The air filter plays a critical role in protecting engine wear which can lead to costly engine replacement

Special design conventional style thermostat with pressure relief hole

Teeth: 167

Outside diameter: 121

Dayco Automatic Belt Tensioner 89423 Housing type The control arm serves asDayco No Slack Automatic Belt Tensioner is designed to maintain constant tension on serpentine belt drives. The serpentine belt drives consist of a single belt that powers most, if not all, of the engine's accessories. To maintain the proper tension throughout the drive, an automatic, spring loaded tensioner is incorporated into the drive system geometry. Dayco's Automatic Belt Tensioner features a patented "flat spring" design that's engineered to