A timing belt is an important part of the internal combustion engine. Its purpose is to control the rotation of the camshaft and crankshaft enabling the engine valves to open and close at the correct times. A timing belt pulley is designed to support and secure the timing belt, enabling it to remain in the correct position. The pulley you need will vary depending on the make and model of your vehicle. Vehicles with larger timing belts often require more than one tensioner pulley. At Parts for All Cars we only stock the highest quality products so you can rest assured your internal combustion engine is functioning at its best. Browse some of the best available parts available online.