HS Code for Spark Plugs
The HS Code for spark plugs is 851110. The MFN duty rate for importing to the US is 2.5%.
| HS Code (6-digit) | 851110 |
|---|---|
| US Duty Rate (MFN) | 2.5% |
| EU Duty Rate (MFN) | 3.2% |
| Chapter | 85 |
| Heading | 8511 |
| Last Updated | 2026-05 |
Description
Spark plugs
HS Code 8511.10 covers spark plugs with a US MFN duty rate of 2.5%.
Frequently Asked Questions
How does the presence of precious metals like platinum or iridium in the electrode tips affect the HTS classification of spark plugs under 8511.10?
Spark plugs remain classified under HTS 8511.10 regardless of precious metal content in the electrodes. The classification is based on the primary function as ignition plugs for internal combustion engines and is not subdivided by electrode material. Therefore, platinum, iridium, or copper-core spark plugs are all classified identically under this heading.
What specific customs risks exist for spark plug imports under HTS 851110?
Spark plugs are high-risk for incorrect country of origin marking, as they are often manufactured in multiple countries with minimal final assembly. Customs may inspect shipments to verify the accuracy of the declared origin and ensure they are not subject to anti-dumping or countervailing duties, such as those previously applied to certain Chinese-made spark plugs. Additionally, misclassification under a heading with a lower duty rate is a common compliance issue that triggers exams.
What additional duties or fees, beyond the base tariff rate, typically apply to imports of automotive spark plugs (HTS 851110) into the United States?
In addition to the Most-Favored-Nation (MFN) duty rate of 2.5% for spark plugs under HTS 8511.10.00, imports from most countries are subject to standard merchandise processing fees (MPF) and harbor maintenance fees (HMF). However, spark plugs are notably subject to an additional 2.5% U.S. Section 301 tariff if they are of Chinese origin, which is a significant cost adder that does not apply to imports from other countries.
Spark Plug Material Variations and Classification
The classification under HTS 851110 for spark plugs is generally not subdivided by the material of the central electrode or insulator. Plugs with standard materials (e.g., copper core nickel alloy electrodes, ceramic insulators) and those with premium materials (e.g., platinum, iridium, or silver electrodes) are all classified here. This differs from other automotive parts where material can shift classification, such as certain gaskets or seals. The key determinant is the product's primary function as an ignition plug for internal combustion engines, regardless of material upgrades intended to extend service life or improve performance.
Alternative & Potentially Confused Classifications
Electrical ignition parts similar to spark plugs can be misclassified under other headings. Common alternatives include HTS 851140 for ignition magnetos, magneto-dynamos, and magnetic flywheels, which are the generating components, not the plugs themselves. Additionally, parts of spark plugs (e.g., ceramic insulators, metal terminals) may fall under their respective material headings, such as 8546 or 8547, if imported separately and not as complete ignition devices. Always verify if the import is a complete, ready-to-use plug or a sub-component.
Compare prices from automotive parts manufacturers
Compare Prices from Manufacturers →Sponsored by Alibaba
Related HS Codes
Ready to source Spark Plugs?
Compare prices from verified suppliers on Alibaba.
View Verified SuppliersAffiliate link — we may earn a commission at no extra cost to you.
Related Tools
Get tariff change alerts
We'll email you when duty rates change for products you care about. No spam.