Dayco Automatic Belt Tensioner APV2552 Gold It contains a solvent carrier

It contains a solvent carrier that evaporates from the treated components whilst leaving a thin film of corrosion protecting oil

Equivalent to Ryco RTK253

Flange to base: 20mm

Enviro+ C4 is a premium full synthetic

with an advanced additive system to provide ultimate performance and protection under all operating conditions

Dayco Automatic Belt Tensioner APV2552 Gold It contains a solvent carrierDayco 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