I bought this to inflate my Jeep's tires with the ARB onboard air compressor. It worked right away, but the brass screw was leaking air. I took it out and applied some of the Teflon tape that came with it and that solved the problem. I'll let you know if I have any problems on track this weekend. Update: I got this out on the track this weekend and it worked great. One thing I had to do was take whatever was screwed or secured and wrap it with teflon tape. This stopped all the leaks and I will report that I am very happy with this product. I will update if anything changes.