Dayco Automatic Belt Tensioner APV2474 Syntec and a specially formulated treatment

and a specially formulated treatment of the polyester cord provides strength

Outside diameter: 153mm

That's small when compared to the human hair which is approximately 90 micron

Teeth: 137

straight and curves vane

Dayco Automatic Belt Tensioner APV2474 Syntec and a specially formulated treatmentDayco 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