These washers go on either side of your lower wishbone or A-arm bushes. With out these in place you are doing serious damage to your front suspension. The originals were made of Prescollan and typically disintegrated and fell out at about 20,000 miles or years of the car sitting. K&D has these manufactured out of a hard plastic called Delrin. Once you install these puppies, you'll never have to replace 'em again! To do both sides you'll need 8 each. Don't ya wish more parts were like this!