Long story short, a car hit my E250 rear bumper and it got some scratches and got little displaced from the outside(Isn’t visible much) but later when I came back home I checked beneath the bumper there’s a black plastic part broken which earlier was not. I checked it with a older picture few days back. It got damaged during the hit. Can someone tell me what part is it? And is it a part of bumper or the body? Attaching before and after images


And yes the diffusers/exhaust tip too got disangled