Loading...
HSChapter 84
U.S. imports of catalytic converters and particulate filters for internal combustion engines (HS 842132) totaled $293.0M in July 2026, traded with 45 countries.
Importers of Catalytic Converters and Particulate Filters for Internal Combustion Engines paid $6.4M in duties in July 2026 — an effective duty rate of 18% on $35.3M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataCatalytic converters and diesel particulate filters reduce harmful exhaust emissions from internal combustion engines and are subject to stringent EPA and state-level (particularly California CARB) compliance requirements that govern both OEM and aftermarket products entering US commerce. Mexico and Canada are the leading suppliers, reflecting tightly integrated North American automotive production networks. Goods from Germany and South Korea are also significant, and importers should be aware that aftermarket catalytic converters must meet EPA emissions standards to be legally sold or installed in the US.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4.7K shipments/mo
Aftermarket catalytic converters imported for sale or installation in the US must comply with EPA regulations under the Clean Air Act, which prohibit the sale of converters that do not meet applicable emission standards. California additionally requires CARB Executive Order certification for vehicles registered in the state. Importers should obtain compliance documentation from the manufacturer before entry.
Under the US schedule, the single 10-digit line 8421320000 is described as 'catalytic converters,' which encompasses both catalytic converters and particulate filters for purifying or filtering exhaust gases from internal combustion engines as defined at the HS6 level. Importers should ensure the commercial invoice description aligns with the specific product type for accurate CBP review.
Subheading 1 of 12 in heading 8421
Subheading 842132 · $293.0M of $1.3B
Supplier Network
Get discovered by U.S. importers searching for HS 842132 — Catalytic Converters and Particulate Filters for Internal Combustion Engines. Be the first supplier listed.
ImportsExports
Imports
$293.0MYoY · Pro
Exports
$109.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8421320000 | Catalytic Converters | $293.0M | 2.18% | 12.04% | $6.4M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8421320000 | Catalytic Converters | $109.5M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Imports · July 2026
origin
Mexico and Canada together supply 83% of it.
customs district
destination
entry
rate provision · imports
84.9% enters free of duty; the effective duty rate is 2.18%.