I have a broken engine post, well i don't know what the part is called or the part number , where can I get this part that is cheaper than the dealer or how much am I looking to pay for this part from the dealer, what is the part number, it is on the driver side, and what causes this to happen.

thanks in Advance

Should be a part number cast on the top side of the arm beside the Mercedes star. Poke your head down in there a bit with a light.

Car-part.com too or dealer. Go ahead and replace the motor mounts while you have this out.

Could have been bad casting? Something hit with great force? Overtorqued bolt?

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

A collision can do that too. The mount won't hold the engine if the car is hit a certain way at sufficient speed.

To me this is something you could find at a junkyard off a bad engine. You should also make sure the mount in the car's frame is not cracked - that's also a junkyard item. As long as you don't repeat the issue and get one from a collision car.

Ken300D

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1982 300D at 351K miles
1984 300SD at 217K miles
1987 300D at 370K miles

now that you mentioned it, I was hit from the back a few months ago and the insurance company totalled my car. but the engine works great that i am still trying decide to keep or get rid of the car, this would explaine the direction of th cracked mount, I will check on the other mount to see if it needs to be replaced. luckily the engine didn't fall apart on me coz I drove it 120MPH even after the accident.