I have a simple question to all MB engine gurus here:
I was recently at the dealer and they forgot to install 2 screws that
hold the black piece of plastic on top of the E420 engine. When I came
back the service manager just said they were not important and
besides they can't find them anymore. How important are they, I
noticed that the air filter box outlet goes into that cover. So with
the back of my cover not being tightened down, will dirty air get into
Also, where one can buy the screws that hold that cover down?
Thank you in advance.
The screws keep the plastic engine cover from vibrating off. While not
exactly urgently important, I would want to see the screws replaced just the
The engine cover helps protect upper engine components from debris, water
and dirt. It has nothing to do with the engine air intake; that's a whole
different system from the air filter to the engine.
The dealer parts desk can get the screws you need by giving them your VIN
and telling them which screws are missing. It may not be a big deal now,
but it's conceivable that the plastic cover might eventually vibrate loose
and hit some important hoses, components or cables. Even if it causes
nothing worse than a vibration noise off the engine, it's still worth your
peace of mind to have it fixed.
It has nothing to do with importance!
It is not up to the dealer to decide which parts of the car are important -
you pay $50K for somebody at MB to make this decisions and the dealer is to
service the car PROPERLY only!
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