Dayco Automatic Belt Tensioner 89428 Ultra-Rotor 5 when used at a

5 when used at a ratio of 375ml per 50 litres of petrol

The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose

Dayco Automatic Tensioners come with either a glass-filled polymer (plastic) or steel pulley that features a dust cover to protect against contaminants

Manufactured to SAE J1401 certification

Overall width: 43mm

Dayco Automatic Belt Tensioner 89428 Ultra-Rotor 5 when used at aDayco 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