BMW S55 Cylinder Head
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.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If OEM replacement parts for warranty service
Statistical suffixes differentiate OEM vs aftermarket; verify importer records
If gas turbine engine components
Chapter structure prioritizes turbine parts over piston engine heads
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• 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
Related Products under HTS 8409.91.99
Honda Civic K20A Type R Connecting Rod
H-beam forged steel connecting rod for Honda K20A 2.0L DOHC VTEC spark-ignition engine in Civic Type R. Features ARP 2000 rod bolts and optimized big-end bearing for high-revving performance. Falls under 8409.91.99 as a principal part for spark-ignition piston engines.
Subaru EJ257 Turbo Manifold
Cast stainless steel tubular exhaust manifold for Subaru EJ257 2.5L turbocharged spark-ignition engine in WRX STI. Features equal-length runners and merge collector for twin-scroll turbo. Principal part under 8409.91.99 for spark-ignition engines.
GM LS3 Aluminum Engine Block
Semi-finished 6.2L LS3 aluminum engine block casting for GM Gen IV small block V8 spark-ignition engines. Features priority main oiling and 4.065-inch bore provisions. 8409.91.99 as principal unfinished part for spark-ignition piston engines.
Yamaha R1 Forged Camshafts
Pair of titanium nitride coated forged camshafts for Yamaha YZF-R1 998cc CP4 crossplane crankshaft spark-ignition engine. Features aggressive lift profile for 15,000+ RPM capability. Classified 8409.91.99 spark-ignition engine valvetrain parts.
Mercedes M177 Oil Pump Assembly
Variable displacement vane oil pump for Mercedes-AMG M177 4.0L V8 biturbo spark-ignition engine. Regulates pressure 2.5-6.0 bar for dry sump lubrication system. 8409.91.99 as principal spark-ignition engine lubrication part.
Porsche 991 GT3 Intake Manifold
Carbon fiber resonance-flap intake manifold for Porsche 991 GT3 3.8L naturally aspirated flat-six spark-ignition engine. Features individual throttle bodies and velocity stacks. Principal part 8409.91.99 for spark-ignition induction system.