Dayco Automatic Belt Tensioner 89470 Microshield Disc pad wear sensors are

Disc pad wear sensors are an advanced safety feature on many late model vehicles

Variations available including mechanical (hard to hard greasable) ball joints and encapsulated (non-greasable) design

Overall width: 58

Crank bore: 30

They have been developed by one of the world's leading high performance friction material manufacturers incorporating the latest technology and extensively tested under extreme conditions

Dayco Automatic Belt Tensioner 89470 Microshield Disc pad wear sensors 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