The throttle body C-clip secures the diverter valve charge pipe to the throttle body assembly on the N54 and N55 engines. Unfortunately, this particular part was not available for replacement from the dealership. To purchase a replacement in the past, you would have to purchase a new factory diverter valve charge pipe just to get this part. After much demand from customers, we have finally released a replacement throttle body C-Clip for the N54 and N55 engines. The replacement throttle body flange is made out heat treat high tensile stainless steel.