This part is listed by BMW as BMW part number 16127749606 (16 12 7 749 606) and is described as Differential Union Fitting (990-06D) for BMW M4 GT4
This is a part that we buy directly from BMW Motorsport. It was originally designed by Motorsport engineers for competition use in a factory BMW racing program. As a part designed for competition use, it does not have a warranty. BMW Motorsport parts may sometimes be in short supply and orders are released at the discretion of BMW Motorsport. If a part is not in stock, contact us for the latest estimate on delivery time.
BMW Fitments:
4 Series
F82 / F83 (2015-2020) > M4 GT4