This is a genuine VAG tensioner, part number 06J903133D. It is designed to maintain the correct tension on your vehicle's accessory belt, which is crucial for the proper functioning of components like the alternator, power steering pump, and air conditioning compressor. Proper belt tension prevents slippage, reduces wear on the belt and pulleys, and ensures that all driven accessories operate at their intended speed. A failing tensioner can lead to noise, premature belt wear, and potential failure of the accessory drive system. Installing a genuine VAG tensioner guarantees compatibility and performance that meets the original manufacturer's specifications. This part is essential for the reliability and longevity of your vehicle's engine and its associated systems.
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