The invention relates to a muffler (1), in particular a vehicle muffler, comprising at least one resonator chamber (12), which is bounded by at least a first housing part (2) having a first outer jacket (15) and a first end wall (16) in which an inflow opening (19) is disposed arranged on the inflow side (25), and a first internal pipe segment (20). Furthermore, at least one coupling device (6) for coupling to a turbocharger (9) is provided, which is accommodated in the first end wall (16) of the first housing part (2). The coupling device (6) comprises a coupling body (7) which is designed as a deep-drawn part. The first housing part (2) is likewise formed by a deep-drawn part, and the inflow opening (19) of the first housing part (2) has an extension which is tapered in steps man axial section (23) in which the coupling body (7) and a sealing element (27), such as a radial sealing ring, are accommodated.

A method including providing a mold cavity to produce an outer contour of an acoustic resonator and providing a mold core to produce an inner contour of the resonator. The inner contour corresponds to a plenum, and a connecting channel in fluid communication with the plenum. An insert fitting adjacent to the mold core defines a length of the connecting channel during injection molding of the resonator.

A mounting structure for a sound absorber in an air cleaner is used to attach a sound absorber to a case of the air cleaner. The case includes a first segment and a second segment that is coupled to the first segment and defines an internal space of the case together with the first segment. The sound absorber is disposed along an inner surface of the first segment. The first segment includes a positioning portion configured to position the sound absorber relative to the first segment by engaging with the sound absorber. The second segment includes a restricting portion configured to restrict lifting of the sound absorber from the inner surface by coming into contact with the sound absorber.