Depending on the year of manufacture and body type, the attachment points differ slightly.
Front bumper
-open the hood.
-release it from the latches (pull it towards you) and remove the grille.
-take out the caps in the lower grille (inserted from bottom to top).
-unscrew the screws (twisted from bottom to top) that secure the lower part of the bumper.
-turn the wheels to the side.
-in the wheel arches we release the fender liners (front part).
-behind the fender liners, unscrew one nut on each side (twisted from bottom to top), which secures the corners of the bumper to the wings.
-with an assistant, carefully pull the bumper forward (watch the wires).
-disconnect the connectors of the electrical equipment (if any).
Rear bumper
-open the trunk lid.
-from the bottom side, unscrew the screws (twisted from bottom to top) that secure the lower part.
-in the wheel arches we release the fender liners (rear part).
-move the fender liners to the side and unscrew one screw on each side that secures the corners of the bumper to the wings.
-next, either unscrew the screws that secure the metal amplifier to the bumper, or the four bolts that secure the amplifier brackets to the body.
-with an assistant, pull the bumper back (watch the wires).
-disconnect the connectors of the electrical equipment (if any).
How to remove front and rear bumper Nissan Primera P11 (1996-2002)
How to remove front and rear bumper Nissan Primera P12 (2002-2007)