That's how we came to install this part. I skipped the window to get it back so it's up to me but I think this review stands on its own for what it is. As you can see in the picture, the inlet port (bottom threaded hole) has a hole drilled in the bottom of the hole. I have tried many times to get it to seal and it never worked. Why did it happen? If the hole doesn't line up with the brake line, it will never line up. I confess I didn't pay close attention to him when he came out of the box. I liked it and proceeded with the installation. It was only later, after driving myself insane, that I finally pulled it out again, only to see the manufacturing flaws. Despite my shortcomings, the part was still not well done as you can see.