These are working great I swapped these for preventative maintenance and no issues yet 10k later.

I'm usually hesitant to buy anything but original BMW parts for my car, but I can honestly say in the case of these ignition coils, they are EXACTLY the same part that came with my car. The original ones that I removed from my car have the exact same design and the Delphi logo in the same place. Installation is easy enough if you're just doing the ignition coils, but I also replaced the spark plugs. When replacing the spark plugs (on N20 engine) I highly recommend first removing the various plastic and rubber components that normally cover the rear most plug, it'll add maybe another 15 minutes of time to the job, but its totally worth it... otherwise that last plug will be a pain to install.