RESONATOR-INTEGRATED DUCT AND METHOD FOR MANUFACTURING RESONATOR- INTEGRATED DUCT

A resonator-integrated duct includes: a duct portion through which intake air flows, and a resonator chamber integrally formed with the duct portion and in contact with the duct portion so that an outer wall of the duct portion serves as a partition wall. The resonator chamber includes a plurality of opening portions and respectively having an opening and an opening that penetrate through an outer wall of the resonator chamber, a communication hole that is formed, on the partition wall, at a position facing the opening of the one opening portion and that communicates with the duct portion, and a plurality of lid members that close the openings of the plurality of opening portions.