BMW 3-series IV (E46) (1997-2006)
Depending on the year of manufacture, the attachment points may vary slightly.
-open the hood.
-unscrew the wheels left or right, depending on which side you will unscrew first, and in the wheel arches, Unscrew the screws that secure the fender liner and side of the bumper.
-unscrew the screws from the bottom (spun up).
-through the special holes, unscrew the two bolts (spun up) that secure the bumper amplifier to the shock absorbers. Depending on model type, the holes are located in the lower grille or in the lower part of the bumper (requires an extension with a crank).
-pull the edges of the bumper towards you and pull it forward from the guides in the wings (it's more convenient to do this with an assistant).
-remove the connectors from the fog lights (if any).
-open the trunk lid.
-from the trunk, unscrew three nuts on each side that secure the bumper amplifier shock absorbers to the body. In some types of BMW E46 models, there are holes in the lower part of the bumper through which you can unscrew two bolts (twisted from the bottom up, you will need an extension with a knob) that attach the bumper reinforcement to the shock absorbers.
-along the entire length of the lower part of the bumper, Unscrew the screws (spun up).
-unscrew the screws in the wheel arches that secure the sides of the bumper.
-pull off the bumper from the side clips (pull the edges towards you and back) and pull it off the guides back.
-if you have parking sensors, disconnect the connectors.