This adapter works on my 2006 Honda Civic coupe. It fits snugly and holds the pressure. I have an ARES brake bleeder (70921) that I bought cheap on the bay. Depending on your brake bleeder device, you may need to adapt it to your fittings or hoses. It was easy for my setup. I had to unscrew the quick connector on the adapter that came with the ARES. I then removed the quick coupler from that adapter and screwed the quick coupler into the one that came with the ARES. It fits perfectly!