Patent ID: 8678027

Claim:
An exhaust passage component comprising: a first member, at least part of which including a first recess surrounded by a plate-like portion; and a second member, at least part of which including a second recess surrounded by a flange, wherein a boundary is defined between the second recess and the flange; wherein the first and second members are joined, with the plate-like portion and the flange abutting each other, wherein an inner space is defined between the first member and the second recess, the first member has an upstream opening allowing exhaust to flow from upstream of the exhaust passage component into the inner space, and whereas the second member has a downstream opening allowing the exhaust to flow from the inner space to downstream of the exhaust passage component, and wherein the flange has a through-hole serving as an exit of a drainage passage, wherein the first recess overlaps only a portion of the boundary and overlaps the through-hole, as viewed from a direction perpendicular to abutting faces of the plate-like portion and the flange, thereby defining the drainage passage.