Catalytic converters or particulate filters, whether or not combined, for purifying or filtering exhaust gases from internal combustion engines
Catalytic converters and particulate filters for internal combustion engine exhaust
HSN 8421 32 00 (catalytic converters or particulate filters for purifying or filtering exhaust gases from internal combustion engines) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code (IEC), bill of entry, commercial invoice, packing list. Other filtering or purifying machinery under Chapter 84, or vehicle-integrated emissions components classified with the vehicle itself, may attract distinct compliance obligations.
The absence of compliance at this tariff line does not extend to all goods that arrive under descriptions invoking emissions control: components supplied as original equipment integrated into a motor vehicle, or aftermarket parts subject to automotive-sector type-approval, may be assessed under a different tariff line on customs examination. Re-classification on examination triggers retrospective compliance, including detention pending the relevant approval. Verify the product's commercial description, intended use, and installation context against the customs tariff before relying on the absence of compliance.