The Continental Timing Belt Kit - 135379 is a comprehensive kit of products designed for use in a car's timing belt system. It includes four essential components to ensure proper functioning and maintenance of the timing belt. These components are a timing belt, a water pump, a tensioner, and an idler pulley. The timing belt is responsible for synchronizing the rotation of the engine's camshaft and crankshaft, while the water pump circulates coolant to prevent overheating. The tensioner and idler pulley work together to keep the timing belt taut and in place. This kit is an all-in-one solution for replacing or servicing the timing belt system in a car, providing convenience and peace of mind for car owners.