Great adapters for bleeding air from the power steering pump. These adapters fit many pump reservoirs. Must use in combination with the mini vac or similar hand pump

I bought this set to bleed the P/S pump on my 1992 Fox Mustang and it worked flawlessly. I had installed a new rack, pump, and lines and wanted to make sure that the trademark Ford whine was not in the new system. I tried to bleed the air from the system using some of the techniques you find online (turning the wheels back and forth, turning the pump by hand) but it still had the noise. I used this cap with a vacuum hand pump according to the directions and the new system is dead silent. No hissing, no whine, its perfect like a new car. I can't recommend this enough to anyone with an older Ford.

I had problems with air in the system on an 08 Impala. I used this and the air was efficiently removed. Just set the appropriate cover on your car's pump. Apply vacuum and the vacuum holds the cover on. I applied 25in of vacuum and listened with a scope and I could hear the bubbles. I continued to apply the vacuum until it held at 25. The key is to maintain a steady vacuum and give it time. If the vacuum drops it's because it's removing air. Worked like a charm.

Excellent product! Fits almost every kind of vehicle, and they seal very well. They are rugged and easy to use.

A great quality product. Note that all leaks in the power steering system return must be repaired first. Or you will just keep getting air into the system.