I installed this power steering pump and it works fine. It came with bungs and some residual liquid inside so I'm guessing it was tested. All parts looked like new and fit 100%. No high pressure line o-ring was supplied which was disappointing. However, it fits perfectly and works as good as new as far as I can tell. There are no leaks, no background noise. Please note it does not come with a pulley so you will need to salvage it from the unit you are replacing.