The power steering pump as said. Remember the bolts are well hidden, do a search to find them in a picture if you can. There's one to the front one to the side and one to the rear that have to loosen. The front and back just loosen, the one facing the fender, loosen quite a bit to gain the 'ark' you will need. Rachet wrenches worked the best for me, as room is miniscule.