My Countryman All4 S runs great with tese plugs. They use a common 5/8" socket to install. You will still need something special to take out the factory Beru plugs. I used the Long Reach Bi-Hex tool for that duty.
I would recommend anybody to purchase anything from his company everything I have received has been great and timely performance wise perfect
Gary Radowick
After my daughter ran over a piece of "plastic" on the interstate in her 2006 R53 puncturing the fuel tank, I placed an order with Aaron for replacement. Due to the pandemic, inflation and the overall state of the world, both the price of the item from Mini and the shipping costs had increased significantly. Aaron was proactive and made me aware of the changes in price and the potential shipping delays and was willing to work with me on both. I'm happy to say the part part arrived to me sooner than anticipated and I'll be installing it this weekend. Aaron is a great guy running a great company and he has a customer for life!