MTU 12V4000M63 Diesel Engine from Japan
High-performance marine diesel engine delivering 1020 kW for auxiliary power and propulsion in offshore supply vessels. Falls under HTS 8408.90.90.40 as a compression-ignition piston engine in the specified power band, distinct from vehicle or aircraft engines.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Submit detailed technical datasheets proving power rating and piston engine type during customs entry
• For marine use, prepare IMO Tier compliance docs; common pitfall is classifying as aircraft engine
• Avoid bulk shipments without individual serial numbers to prevent valuation disputes