SOUNDPROOFING MUDGUARD FOR WHEEL ARCH OF A MOTOR VEHICLE

The present invention relates to a mudguard (1) intended to be fixed inside a wheel arch passage of a motor vehicle, comprising a shell (2) made of thermoplastic material having a wall (5) intended to come into contact opposite the rolling surface of the wheel, the wall (5) comprising at least one zone (8) provided with a plurality of holes (7), said zone (8) being intended to form a Helmholtz resonator with a part (120) of the vehicle body surrounding at least partially the shell (2), said part (120) having at least one cavity (121) adjoining said zone (8).