Cast Iron Exhaust Collector from Japan
Large cast iron collector box equalizing exhaust pulses from multiple cylinders before turbo on performance trucks. HTS 8708.92.70.00 for complex cast iron exhaust parts. Log-style manifold design maximizes low-end torque.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Runner volume calculations prove collector function
• Sand casting imperfections documented as normal
• OEM replacement status simplifies CARB approval