Dayco Automatic Belt Tensioner 89487 4-Stroke All Bearing Wholesalers hubs are

All Bearing Wholesalers hubs are manufactured to the highest quality using high grade steel material and relevant heat treatments to ensure smooth

Outside diameter: 169

DMH4027 (x1)

Flange Dia: 52mm

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Dayco Automatic Belt Tensioner 89487 4-Stroke All Bearing Wholesalers hubs areDayco 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