Your BMW 528I camshaft position sensor is a magnetic or Hall Effect sensor that sends signal to the computer relaying information about shaft speed, position and acceleration or declaration. This information identifies when the fuel/ mixture is to be fired and how much mixture the engine need. Your camshaft position sensor is in trouble when there is a loud chirping noise at the front of your engine. Your engine is very much like a slot machine without a cap rotor. Just make sure that you have the most accurate tools if you will replace it. To make sure of the quality especially if you want an upgrade in the over all performance of your auto, get your new BMW VDO camshaft position sensor. If you are looking for a trusted dealer of VDO camshaft position sensor, we are the store that will provide your needs. We have also the BMW 528I camshaft position sensor suited in particular to 1997 BMW 528I. We assure you that it is of supreme quality to match the original specifications of your auto. You can visit us online or you can give us a ring. Our customer service is standing by 24/7 just to cater to your needs. The top rated VDO camshaft position sensor is now within your reach.