An accessory support and air routing system for an internal combustion engine, comprising: an inlet coupler configured to engage and receive a portion of an airflow from an intake system; a support bracket (108, 300, 350) comprising: a housing defining a fluid passage configured to be in air receiving communication with an upstream aperture of the housing and in air providing communication with a downstream aperture of the housing, a cross-sectional area of the fluid passage being similar to one or both of a cross-sectional area of the upstream aperture and a cross-sectional area of the downstream aperture, the cross-sectional area of the fluid passage comprising at least a predetermined minimum cross-sectional area throughout the fluid passage; and at least one mounting platform (208, 210, 212, 214, 216) with fasteners configured to removably engage an accessory device of the internal combustion engine; a first conduit in air receiving communication with the inlet coupler and in air providing communication with the upstream aperture of the support bracket (108, 300, 350); and a second conduit in air receiving communication with the downstream aperture of the support bracket (108, 300, 350) and in air providing communication with an end coupler configured to engage an air compressor inlet. an inlet coupler configured to engage and receive a portion of an airflow from an intake system; a support bracket (108, 300, 350) comprising: a housing defining a fluid passage configured to be in air receiving communication with an upstream aperture of the housing and in air providing communication with a downstream aperture of the housing, a cross-sectional area of the fluid passage being similar to one or both of a cross-sectional area of the upstream aperture and a cross-sectional area of the downstream aperture, the cross-sectional area of the fluid passage comprising at least a predetermined minimum cross-sectional area throughout the fluid passage; and at least one mounting platform (208, 210, 212, 214, 216) with fasteners configured to removably engage an accessory device of the internal combustion engine; a housing defining a fluid passage configured to be in air receiving communication with an upstream aperture of the housing and in air providing communication with a downstream aperture of the housing, a cross-sectional area of the fluid passage being similar to one or both of a cross-sectional area of the upstream aperture and a cross-sectional area of the downstream aperture, the cross-sectional area of the fluid passage comprising at least a predetermined minimum cross-sectional area throughout the fluid passage; and at least one mounting platform (208, 210, 212, 214, 216) with fasteners configured to removably engage an accessory device of the internal combustion engine; a first conduit in air receiving communication with the inlet coupler and in air providing communication with the upstream aperture of the support bracket (108, 300, 350); and a second conduit in air receiving communication with the downstream aperture of the support bracket (108, 300, 350) and in air providing communication with an end coupler configured to engage an air compressor inlet.