Review on ABN Diesel Injector Remover Adapter by Elijah Harvey

I can confirm that they work with M12 threaded injectors on the N54 engine. As others have pointed out, the key is to swap the adapters from side to side. Both sides of the tool have M12 threads, but one side of the shank is reduced in diameter, allowing the M14 thread to slide on the shank, allowing you to screw into the opposite side of the M12 thread. It took me a few minutes to figure it out, but after that it worked great. Good quality for the price. The threads are easy to cut.