Vehicle component and method of manufacturing vehicle component

A vehicle component comprising:

• a flow path member forming a flow path of a fluid;
• a through hole that is a hole passing through the flow path member;
• and
• a base welded to an outer peripheral surface of the flow path member so as to cover a mounting region that is a region surrounding the through hole in the outer peripheral surface;
• the base including
• a contact surface in contact with the mounting region,
• a communication passage that is a hole extending to pass through the base from a first opening to a second opening, the first opening being provided in the contact surface so as to be connected to the through hole, the second opening being open to an exterior of the flow path,
• an attachment portion that is provided on an inner peripheral surface surrounding the communication passage, that is located close to the second opening, and that is configured to attach a measurement component for use in measurement related to the fluid passing through the flow path,
• a positioning surface formed on a side opposite the contact surface, and
• an engagement receiving portion that is provided on the positioning surface and that is configured to be engaged with a positioning jig that is used to fix a position of the base when the base is welded to the outer peripheral surface of the flow path member.