Rbajoria

Hi , I have c200 new Mercedes. I just sustained damage to the front bumper which need to be replaced. My insurance company is willing to take care of the repair but the garage is not Mercedes approved. My question is if I get repair done by an independent insurance approved garage then how it may effect my warrenty? My car is only 4 months old. I have been assured by the insurance people that they will use Mercedes genuine parts only.