HS Code for Automotive Alternators
The HS Code for automotive alternators is 851150. The MFN duty rate for importing to the US is 2.5%.
| HS Code (6-digit) | 851150 |
|---|---|
| US Duty Rate (MFN) | 2.5% |
| EU Duty Rate (MFN) | 3.5% |
| Chapter | 85 |
| Heading | 8511 |
| Last Updated | 2026-05 |
Description
Other generators and alternators
HS Code 851150 covers automotive alternators and other generators with a US MFN duty rate of 2.5%.
Frequently Asked Questions
How does the presence of an integrated voltage regulator affect the classification of an automotive alternator under HTS 8511.50?
The inclusion of an integrated electronic voltage regulator, which is a common feature in modern automotive alternators, does not change the classification. HTS heading 8511 specifically covers electrical ignition or starting equipment and generators/alternators for vehicles, and the presence of this control apparatus is considered part of the complete, functional unit. The product remains classified under 8511.50 as 'Other generators and alternators' for vehicles.
For HTS 851150 (automotive alternators), what are the specific customs risks related to misclassification and valuation during inspection?
The primary risk is misclassification under a subheading for starter motors (8511.40) or parts (8511.90), which carry different duty rates. Customs may also scrutinize the declared value for used or remanufactured alternators to ensure it reflects the transaction value, potentially leading to delays, reassessments, and penalties.
What additional import costs, beyond the standard duty rate, should I expect when importing automotive alternators under HTS 851150?
Automotive alternators classified under 851150 are subject to a 2.5% U.S. Most Favored Nation (MFN) duty rate, but you must also account for the 2.5% additional duty imposed under Section 301 on products of Chinese origin. Furthermore, Merchandise Processing Fees (MPF) of 0.3464% of the entered value (minimum $29.22, maximum $634.62) and Harbor Maintenance Fees (HMF) of 0.125% of cargo value will apply for ocean shipments.
Material Variants in Alternator Classification
The classification under 8511.50 is generally unaffected by the materials used for the alternator's housing or internal windings, as it is defined by its function. However, if an alternator is presented as part of a motor vehicle engine unit (e.g., mounted on an engine block), it may be classified with the engine under heading 8407, 8408, or 8409. The primary distinction is whether the alternator is imported as a separate, finished part or as an integral component of a larger assembly. For instance, a standalone aluminum-housed alternator for replacement use is definitively 8511.50, while a complete gasoline engine with an attached alternator would be classified under 8407.31 or similar.
Alternative & Similar HTS Codes for Automotive Alternators
Automotive alternators (8511.50) are most commonly confused with other electrical generating equipment in heading 8511. Key alternatives include HTS 8511.40 for electric DC generators, which may be misapplied to alternators that output rectified DC current, and HTS 8511.80 for "other generating sets." It is also important to distinguish them from complete generating sets with a prime mover in heading 8502 (e.g., 8502.11). For hybrid or electric vehicles, alternators may be integrated into a combined motor-generator unit, which could potentially be classified elsewhere, such as under 8501.31 for DC motors.
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