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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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China2.5%+35.0%37.5%
🇲🇽Mexico2.5%+10.0%12.5%
🇨🇦Canada2.5%+10.0%12.5%
🇩🇪Germany2.5%+10.0%12.5%
🇯🇵Japan2.5%+10.0%12.5%

More Specific Codes

This product may fall under a more specific subheading:

8409.91.99.10Connecting rods
→
8409.91.99.90Other
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Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8708.29Lower: 27.5% vs 37.5%

If vehicle body air intake components

Chapter 87 precedence for road vehicle intake systems

6815.99Lower: 10% vs 37.5%

If non-structural carbon fiber shapes

Material-based classification for generic carbon shapes

Not sure which classification is right?

Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.

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Import Tips & Compliance

• Throttle body flange dimensions and resonance chamber volumes prove GT3 fitment

• Carbon weave pattern and autoclave cure specs validate OEM-equivalent construction

• Universal manifolds classify under 8421.39 air filters

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