The GATES T39635 V-Ribbed Belt Tensioner is engineered to maintain the correct tension on your vehicle's V-ribbed belt. Proper belt tension is crucial for the efficient operation of accessories such as the alternator, power steering pump, and air conditioning compressor. This tensioner is built with high-quality materials to withstand the demanding conditions of the engine bay, including heat and vibration. Its robust construction ensures long-lasting performance and helps prevent premature belt wear or slippage. By keeping the V-ribbed belt at the ideal tension, the T39635 contributes to smooth and quiet operation of all belt-driven components. This helps to prevent issues like squealing belts, reduced charging system output, or loss of power steering assist.