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HSChapter 85
U.S. imports of starter motors & dual-purpose starter-generators for internal combustion engines (HS 851140) totaled $122.8M in April 2026, traded with 66 countries.
Importers of Starter Motors & Dual-Purpose Starter-Generators for Internal Combustion Engines paid $10.8M in duties in April 2026 — an effective duty rate of 15% on $71.4M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataStarter motors and dual-purpose starter-generator units — which both crank the engine and generate electrical power once running — classify together under a single 10-digit line (8511400000), reflecting their shared ignition-system function. Dual-purpose starter-generators are particularly common in aircraft piston engines and certain industrial equipment, where weight and component count reduction are priorities. Automotive starter motors represent the bulk of import volume in this heading, with Section 301 tariffs applying to Chinese-origin goods and USMCA treatment available for qualifying shipments from Canada or Mexico.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A dual-purpose starter-generator — designed to start the engine and then function as a generator — falls under 8511400000 within the ignition/starting equipment heading. A standalone alternator or generator not designed to start the engine would typically classify under heading 8511 (generators for internal combustion engines, 8511500000) or potentially under heading 8501 depending on its design. The key classification factor is whether the unit is engineered to perform the engine-cranking function.
Remanufactured starter motors are classified the same as new units under 8511400000, but importers must ensure the declared value reflects the actual transaction value of the remanufactured good. Core charges embedded in the invoice price can create valuation complications; CBP guidance on remanufactured goods and core charges should be reviewed, and a customs broker experienced in automotive aftermarket goods is advisable.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8511400000 | STARTER MOTORS AND DUAL PURPOSE STARTER-GENERATORS | $122.8M | 15.09% | $10.8M |
STARTER MOTORS AND DUAL PURPOSE STARTER-GENERATORS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8511400000 | STARTER MOTORS AND DUAL PURPOSE STARTER-GENERATORS | $54.3M |
STARTER MOTORS AND DUAL PURPOSE STARTER-GENERATORS
584.7K no
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| Michigan | $29.0M | $4.4M | -$24.6M |
| Texas | $12.5M | $11.2M | -$1.3M |
| California | $15.4M | $8.0M | -$7.4M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $24.2M | $9.5M | -$14.7M |
| LOS ANGELES, CA | $23.6M | $2.0M | -$21.6M |
| OTAY MESA, CA | $9.6M | $5.0M | -$4.6M |