Dayco Automatic Belt Tensioner 89369 Elastic Special design bypass style thermostat

Special design bypass style thermostat insert with jiggle pin

Outside diameter: 147mm

Outside diameter: 162mm

Its fast acting formulation effectively seals radiators

zinc oxide and additional synthetic base oil that will resist temperatures of up to 1093°C

Dayco Automatic Belt Tensioner 89369 Elastic Special design bypass style thermostatDayco 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