Dayco Automatic Belt Tensioner 89391 Ultra-4WD DMH3103 (x1)

DMH3103 (x1)

quieter braking and high performance in challenging driving conditions

All Bearing Wholesalers Wheel Bearing Kits are manufactured using high quality materials and components to ensure a smooth and reliable operating life

Outside diameter: 144

Dayco Automatic Belt Tensioner 89391 Ultra-4WD DMH3103 (x1)Dayco 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