Genuine OEM Hyundai Belt Tensioner Assembly, part number 2528125000. This critical engine component is responsible for maintaining the correct tension on the accessory drive belt, which powers various systems like the alternator, power steering pump, and air conditioning compressor. It is typically located on the front of the engine, within the belt drive system. Weighing approximately 0.56 kg, this assembly features a durable metal construction with a smooth-running pulley. Choosing a genuine OEM belt tensioner ensures precise tensioning, optimal belt alignment, and long-lasting reliability, preventing premature belt wear and component failure.