Dayco Automatic Belt Tensioner APV3231 Semi Synthetic Special design thermostat insert assembly

Special design thermostat insert assembly

Bypass style thermostat with jiggle pin integrated into housing

It is specifically designed to not discolour existing coolant*

Across much of Australia

Maximum durability

Dayco Automatic Belt Tensioner APV3231 Semi Synthetic Special design thermostat insert assemblyDayco 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