Genuine OEM Hyundai Timing Belt Tensioner, part number 243702U003. This component maintains the correct tension on the engine's timing belt, ensuring precise synchronization of the crankshaft and camshafts for optimal engine performance. It is a critical part of the engine's belt drive system. Weighing approximately 0.54 kg, this tensioner is built to factory specifications. Choosing a genuine OEM timing belt tensioner ensures exact fitment, proper spring tension, and durable bearing quality, which are crucial for preventing premature belt wear and catastrophic engine damage.