BMW S55 Cylinder Head from Canada
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 — Canada → United States
12.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
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