The October 17, 2025 Presidential Proclamation 10984 Adjusting Imports of Medium- and Heavy-Duty Vehicles, Medium- and Heavy-Duty Vehicle Parts, and Buses into the United States included a provision to self-declare certain auto and truck parts and components as being subject to the tariffs as follows:
(12) An importer of record may declare an automobile part or MHDVP as subject to the automobile parts tariff pursuant to Proclamation 10908, as amended, or to the MHDVP tariff pursuant to this proclamation. For an automobile or MHDV part to be eligible for this treatment, the part must meet the following conditions:
(a) the part cannot be presently subject to the tariffs imposed pursuant to Proclamation 10908, as amended, or this proclamation;