Hi MB Techies!

I just bought my silver C230, with 39,000 kms.

I am hearing a wierd noise in the front end whenever the car takes a slight up or downward slope. The dealer said it is the ball joint and just has to replaced. Is this possible for a car with this mileage? ANd if ever it is the ball joint, are there replacement parts which the dealer might use for the car? I am just afraid they might place replacement parts instead of original MB parts.

Please enlighten me so I will not get screwed again by this dealer.

Thanks