Dayco Automatic Belt Tensioner 89422 Ultra-Rotor The grooved design of the

The grooved design of the Dayco polyrib belt provides flexural stress relief for increased flexibility in both normal and backside bending

Outside diameter: 167mm

which are some of the most severe in the world

High flow version of TT214 series

Dayco Automatic Belt Tensioner 89422 Ultra-Rotor The grooved design of theDayco 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