The Continental Timing Belt Kit - 135408 is a comprehensive set of products designed for use in a car's engine. It includes a timing belt, tensioner, and idler pulley, all of which work together to ensure the proper functioning of the engine's timing system. The timing belt is responsible for synchronizing the rotation of the engine's camshaft and crankshaft, while the tensioner and idler pulley help to maintain the correct tension and alignment of the belt. This kit is essential for maintaining the smooth and efficient operation of a car's engine, and is suitable for use in a variety of different vehicle models.