This item was for my car, then NOT and then again. I installed this part on a 2003 Altima shock. According to the manufacturer, it is for the front. Revane said they were for the back and then said they WILL NOT FIT MY CAR. Since I bought part numbers SB104 and SB108 I had to figure out where and how to install them. The bumper must be positioned with the wide part up, as in the Amazon image. The bellows/bellows must be placed on the edge of the shock absorber, it snaps into place. When everything is assembled it works great. These too were fitted to the rear shock absorbers of a 2003 Nissan Altima. The manufacturer's catalog data is attached. 4 stars for the dishonesty of the manufacturer.