Genuine OEM Hyundai Belt Tensioner, part number 252882A600. This crucial component is responsible for maintaining the correct tension on the engine's accessory drive belt, preventing slippage and ensuring the efficient operation of various engine accessories. It is typically located within the serpentine belt system. Weighing approximately 4 kg, this tensioner is built for durability. Choosing a genuine OEM belt tensioner ensures precise spring calibration, robust bearing quality, and exact fitment, which are critical for preventing premature belt wear and maintaining engine accessory performance.