I purchased a Expansion Valve for my AC unit. It ...

I purchased a Expansion Valve for my AC unit. It came with an aluminum adaptor to fit the truck. This adaptor would never hold pressure after 3 attempts to repair the leak. Needlessly after having to remove the dashboard 3 times I finally ordered another unit that did not include the adaptor. The worst problem was RockAuto would not/could not return the worthless unit. RockAuto return procedure is the worse and they except no phone calls on return items. Be careful when ordering from RockAuto if you have a problem they do not have a system for returns that works.