A turbocharger, comprising: a rotation shaft; a compressor impeller provided on one end side of the rotation shaft; a compressor housing configured to accommodate the compressor impeller; a bearing housing connected to the compressor housing at an end portion of the bearing housing on one side thereof, the bearing housing being configured to define, between the bearing housing and the compressor housing, a diffuser flow path which extends along a direction orthogonal to an axis of the rotation shaft and through which intake air compressed by the compressor impeller flows, the bearing housing comprising therein a protruding wall portion protruding from an inner peripheral wall surface of the bearing housing, an inner diameter of the inner peripheral wall surface at the end portion of the bearing housing on one side thereof being formed to be greater than an outer diameter of the compressor impeller; a thrust plate accommodated in the bearing housing and configured to support the rotation shaft in an axial direction; an insert component accommodated in the bearing housing at a position closer to the end portion of the bearing housing on one side thereof than a position of the thrust plate in the axial direction of the rotation shaft, and configured to retain the thrust plate between the insert component and the protruding wall portion; a snap ring accommodated in the bearing housing and configured to be inserted in a first circumferential groove formed in the inner peripheral wall surface of the bearing housing, to thereby fix the insert component in a state in which the insert component is pressed against the thrust plate; and a diffuser component accommodated in the bearing housing and having a diffuser surface that defines a part of the diffuser flow path extending along the direction orthogonal to the axis of the rotation shaft between the inner peripheral wall surface of the end portion of the bearing housing on one side thereof and an outer peripheral edge of the compressor impeller. a rotation shaft; a compressor impeller provided on one end side of the rotation shaft; a compressor housing configured to accommodate the compressor impeller; a bearing housing connected to the compressor housing at an end portion of the bearing housing on one side thereof, the bearing housing being configured to define, between the bearing housing and the compressor housing, a diffuser flow path which extends along a direction orthogonal to an axis of the rotation shaft and through which intake air compressed by the compressor impeller flows, the bearing housing comprising therein a protruding wall portion protruding from an inner peripheral wall surface of the bearing housing, an inner diameter of the inner peripheral wall surface at the end portion of the bearing housing on one side thereof being formed to be greater than an outer diameter of the compressor impeller; a thrust plate accommodated in the bearing housing and configured to support the rotation shaft in an axial direction; an insert component accommodated in the bearing housing at a position closer to the end portion of the bearing housing on one side thereof than a position of the thrust plate in the axial direction of the rotation shaft, and configured to retain the thrust plate between the insert component and the protruding wall portion; a snap ring accommodated in the bearing housing and configured to be inserted in a first circumferential groove formed in the inner peripheral wall surface of the bearing housing, to thereby fix the insert component in a state in which the insert component is pressed against the thrust plate; and a diffuser component accommodated in the bearing housing and having a diffuser surface that defines a part of the diffuser flow path extending along the direction orthogonal to the axis of the rotation shaft between the inner peripheral wall surface of the end portion of the bearing housing on one side thereof and an outer peripheral edge of the compressor impeller.