HTS code 9902.15.42 covers "Engine blocks, each weighing over 272 kg but not over 317 kg, for compression-ignition internal combustion piston engines (diesel or semi-diesel engines) having a cylinder capacity of approximately 12.4 liters for vehicles of subheading 8701.20 (provided for in subheading 8409.99.91)" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.