Porsche 991 GT3 Intake Manifold from Mexico
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.
Duty Rate — Mexico → United States
12.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• 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