The NTN Timing Belt Kit - 137769 is a comprehensive kit of products designed for servicing a car's timing belt. It includes a variety of essential components to ensure proper functioning and maintenance of the timing belt system. The kit contains a timing belt, tensioner, idler pulley, water pump, gaskets, seals, and other necessary hardware. These products are specifically selected to fit a wide range of car models and are made with high-quality materials for durability and reliability. The timing belt is responsible for synchronizing the engine's camshaft and crankshaft, and regular maintenance is crucial to prevent engine damage. This kit provides all the necessary components to replace and maintain the timing belt system, ensuring the smooth and efficient operation of the engine.