Genuine OEM Hyundai Timing Chain Tensioner, part number 243702A000. This critical component is designed to maintain optimal tension on the engine's timing chain, preventing slack that could lead to timing inaccuracies or chain damage. It ensures smooth and reliable operation of the valve train. Weighing approximately 0.08 kg, this tensioner is typically mounted to the engine block or cylinder head. Using a genuine OEM timing chain tensioner guarantees the correct spring force and hydraulic damping for reliable chain operation and extended engine life.