Abstract: A housing for an exhaust component having a longitudinal axis, an outer shell, an inner shell positioned within the outer shell, an expanding joint for permitting relative longitudinal movement of the inner and outer shells in response to temperature differences between the inner and outer shells, and an expanding joint for permitting relative circumferential movement of the inner and outer shells in response to temperature differences between the inner and outer shells.

Abstract: A noise attenuation system is provided for attenuating noise in exhaust product flowing through an exhaust system. The noise attenuation system includes a tube and an acoustic reflector attached to the tube. The tube includes an inlet end, an outlet end, and an inner surface defining a passageway through which the exhaust product flows. The acoustic reflector includes a tab extending across the passageway. The tab includes a first surface that is convex and faces toward the inlet end of the tube and a second surface that is concave and faces toward the outlet end of the tube.