How to Assemble a Bumper for a 450Sl


1. Turn the 450 SL's engine off. Remove the rubber side trim along the sides of the bumper by unfastening the bolt at the edge of the trim with a socket wrench.
2. Remove the bolt on each side of the bumper with a socket wrench. Once the bolt is removed, unhook the six metal tabs underneath the bumper. You can press them in and slide the bumper off. If it is too difficult, you can use a flat-head screwdriver to pry the locking tabs inwards to remove unhook them.
3. Remove the bumper from the vehicle once the tabs are unhooked. Use a Phillips screwdriver to remove the four screws securing the bumper cover to the bumper.
4. Assemble the bumper by securing the bumper cover to the bumper itself with the four screws. Place the bumper back onto the vehicle and make sure all the locking tabs click into place.
5. Reinstall the two bolts on the sides of the bumper and reinstall the rubber trim.