A good Mercedes dealer will be able to provide finding mercedes benz repair which are guaranteed through the manufacturer to work properly. You will also be able to rely on your Mercedes dealer to install the parts since the mechanics who work with Mercedes Benz parts are trained and experienced in working on Mercedes Benz cars.
If you do not currently have a local Mercedes Benz dealer then you can order your parts from a local auto parts shop and either install them yourself or hire a local mechanic. If your safety depends on the part being installed correctly you will want to be sure to hire someone who you personally trust and depend upon. It's true that you do not always have to buy Mercedes Benz parts for Mercedes Benz cars, sometimes another brand e.g. Bosch, will do just as well.
You can find a wide variety of Mercedes Benz parts online often for a fraction of the cost you will pay at a dealership. You should be careful to ensure that the parts which you order are the actual parts which you require since there may not be a return policy available for any online orders. This may be especially true if you have ordered from a breakers yard. But it does seem to be that these days, even they are offering a 30 day returns policy.
Occasionally some Mercedes Benz Shop in Downriver MIchigan will need to be ordered or installed regularly as a part of the normal upkeep and maintenance associated with your car. If you have to order your Mercedes Benz parts online you may wish to order a couple of extra oil filters or whatever you normally would require during the completion of your regularly scheduled tune ups.
If you require a specific type of Mercedes Benz parts such as a engine or a transmission you may find that it is easier to go through your dealer to find the right Mercedes Benz part. The dealer will have it shipped to the dealership so you will not need to worry about how to move the parts when they arrive. More importantly, if the engine or gearbox does not work when it is installed, you will have more chance of compensation if it has come from a dealer. It is unlikely that they will want to tarnish their reputation.