BMW S55 Cylinder Head from Japan
Aluminum CNC-ported cylinder head for BMW S55 3.0L twin-turbo inline-6 spark-ignition engine in M3/M4. Includes integrated Valvetronic system and direct injection passages. 8409.91.99 classification for spark-ignition IC engine principal parts.
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
• Valve seat and port configuration diagrams essential to prove engine-specific design
• Include CAD files showing Valvetronic integration - generic heads risk 8411 classification
• Thermal barrier coating specs help distinguish from aftermarket universal heads