Radiator Shell Connector
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🔌 Radiator Shell Connector (Auto Parts)
🌐 HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 1. Product Definition & Classification: Do You Understand "Radiator Shell Connector"?
The "Radiator Shell Connector" is a critical component in automotive cooling systems, used to connect the radiator shell to hoses, tanks, or other cooling circuit parts. In international trade, its classification depends heavily on its material composition and specific function:
Plastic Connectors (Polymer): Mostly used in modern vehicles for lightweight and corrosion resistance; classified under plastics.
Metal Connectors (Brass/Steel/Aluminum): Used in heavy-duty or high-pressure applications; classified under base metals.
Rubber/Silicone Connectors: Flexible joints for vibration absorption; classified under rubber products.
⚠️ Key Distinction Points:
- If made of plastic and designed for general automotive use → 3926.90 or 3917.39
- If made of metal (e.g., brass) and used for fluid connection → 7412.19 or 8431.49
- If a complete assembly with gaskets/seals for a specific car model → 8708.99 (Parts of Motor Vehicles)
- General Rule: If it is a generic part not specifically identifiable as a part of a particular vehicle, it may fall under 3926.90 (Plastic articles) or 7318.15 (Bolts/Screws/Connectors), but auto-specific ones usually go to 8708.
📦 2. HS Code Classification Details (2026 Latest Tariff Authoritative Comparison)
| HS Code | Product Description | Application Scenario | Material |
|---|---|---|---|
8708.99.49.00 |
Other parts and accessories of motor vehicles (specifically for radiators/connectors) | Genuine or OEM automotive radiator connectors | Plastic/Metal/Composite |
3926.90.99.90 |
Other articles of plastics | Generic plastic connector clips, brackets, non-auto-specific | Plastic |
7412.19.00.00 |
Copper tubes, pipes, and hollow profiles | Brass radiator connectors/tubes | Copper/Brass |
7318.15.00.00 |
Other screws, bolts, nuts, and similar articles | Metal threaded connectors/fasteners | Steel/Iron |
4016.93.00.00 |
Other articles of vulcanized rubber | Rubber gaskets, hose connectors | Rubber |
🔍 Key Reminder:
- Auto-specific parts (identifiable as for cars/trucks) should be classified under Chapter 87 (8708.99).
- Generic components (not specific to any vehicle) may be classified under Chapter 39 (Plastics), 73 (Iron/Steel), or 74 (Copper).
- Misclassification Risk: Declaring a car-specific connector as a generic plastic part (3926.90) may lead to underpayment of duties in some jurisdictions, while declaring a generic clip as an auto part (8708.99) may trigger unnecessary scrutiny.
💰 3. 2026 Latest Tariff Rate Breakdown (Including Additional Taxes & Policy Surcharges)
✅ Applicable Country: United States (US)
✅ Origin: China (CN)
✅ Effective Date: From November 10, 2025 (including subsequent imports)
🎯 1. 8708.99.49.00 —— Parts of Motor Vehicles (Radiator Connectors)
| Item | Content |
|---|---|
| Base Tariff Rate | 2.5% (ad valorem) |
| USITC Additional Tariff | +25% (from USITC Footnote 9903.88.01) |
| IEEPA Additional Tariff | +10% (for China/Hong Kong products, from Nov 10, 2025) |
| Total Tariff Rate | 37.5% |
| Tax Calculation | CIF Value × 37.5% |
| De Minimis Exemption | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:8708.99.49.00 → FOOTNOTE:9903.88.01 |
📌 Explanation:
- The 25% USITC tariff is based on Section 301 of the US Trade Act;
- The 10% IEEPA tariff is an additional sanction under the International Emergency Economic Powers Act;
- Total 37.5% is a high tariff for auto parts, requiring advance planning.
🎯 2. 3926.90.99.90 —— Other Plastic Articles (Generic Connectors)
| Item | Content |
|---|---|
| Base Tariff Rate | 5.3% |
| USITC Additional Tariff | +25% |
| IEEPA Additional Tariff | +10% |
| Total Tariff Rate | 40.3% |
| Tax Calculation | CIF × 40.3% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:3926.90.99.90 → FOOTNOTE:9903.88.01 |
📌 Note:
- If the connector is generic (not auto-specific) and made of plastic, it falls under 3926.90.
- Total 40.3% is even higher than auto parts, so accurate classification is crucial.
🎯 3. 7412.19.00.00 —— Copper Tubes/Connectors
| Item | Content |
|---|---|
| Base Tariff Rate | 3.0% |
| USITC Additional Tariff | +25% |
| IEEPA Additional Tariff | +10% |
| Total Tariff Rate | 38.0% |
| Tax Calculation | CIF × 38.0% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | IEEPA:9901.25 → IEEPA:9903.01.24 → USITC:7412.19.00.00 → FOOTNOTE:9903.88.01 |
📌 Note:
- Copper connectors are often used in high-performance cooling systems.
- Total 38.0% applies, with strict material declaration requirements.
🛠️ 4. Customs Clearance Practical Advice (Battlefield Pit-avoidance Guide)
✅ 1. Required Documentation Checklist (All Must Be Provided)
| Document | Must Provide | Description |
|---|---|---|
| ✅ Product Spec Sheet | ✔️ | Include dimensions, material, connection type, pressure rating |
| ✅ Material Declaration | ✔️ | Specify plastic type, copper alloy, rubber compound |
| ✅ Product Photos (with Label) | ✔️ | Clear view of model number, brand, input/output parameters |
| ✅ Third-party Test Report | ✔️ | ISO 9001, IATF 16949, RoHS, REACH (if applicable) |
| ✅ Commercial Invoice | ✔️ | Clearly mark "Automotive Radiator Connector" or "Plastic Connector" |
| ✅ Certificate of Origin (CO) | ✔️ | If non-China origin, apply for preferential tariff |
| ✅ Packing List | ✔️ | Clarify relationship between main unit and accessories |
✅ 2. Declaration Tips (Key Mnemonic)
🔥 "Auto-specific 8708, Generic 3926, Metal 7412, Rubber 4016. Don't Mix!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Auto-specific connector (OEM) | 8708.99.49.00 |
Misdeclared as "Plastic Clip" → 40.3% |
| Generic plastic connector | 3926.90.99.90 |
Misdeclared as "Auto Part" → 37.5% + Scrutiny |
| Brass/Copper connector | 7412.19.00.00 |
Misdeclared as "Plastic" → Heavy Penalty |
| Rubber hose connector | 4016.93.00.00 |
Misdeclared as "Plastic" → Tax Difference |
✅ 3. Special Case Handling
| Scenario | Handling Advice |
|---|---|
| OEM Custom Connector | Provide customer order + design drawings to avoid "non-standard" classification |
| Connector + Gasket Assembly | Declare as one unit under 8708.99, do not split |
| Used/Recycled Connectors | Declare as "Used Auto Parts", may require additional inspection |
| Connector for Electric Vehicles (EV) | Still 8708.99, but may require additional safety certifications |
🌍 5. Global Major Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 8708.99.49.00 |
37.5% (China Origin) | IATF 16949, RoHS, REACH | High tariff for auto parts |
| 🇨🇳 China | 8708.99.49.00 |
5% | CCC (if applicable) | No additional tariffs |
| 🇪🇺 EU | 8708.99.49.00 |
0% (if符合 CE) | CE, ECE R99 (if applicable) | No additional tariffs |
| 🇦🇺 Australia | 8708.99.49.00 |
5% | RCM | No additional tariffs |
| 🇯🇵 Japan | 8708.99.49.00 |
0% | PSE (if electrical) | No additional tariffs |
📌 Conclusion:
- USA is the only market with high additional tariffs for auto parts;
- China-origin auto parts in the US face high clearance costs, suggesting supply chain adjustment or transshipment.
📌 6. Common Errors & Pit-avoidance Guide (Blood and Tears Lessons)
❌ Error 1: Declaring a car-specific connector as a generic plastic part (3926.90)
👉 Consequence: Tax underpayment + fines → Back taxes + penalties!
❌ Error 2: Splitting "Connector + Gasket" into separate items
👉 Consequence: Each item taxed separately → Total tax exceeds 100%!
❌ Error 3: Not providing material declaration, only stating "Connector"
👉 Consequence: Customs unable to determine material → Delay or Return
❌ Error 4: Using "Plastic Clip" as declaration name for a brass connector
👉 Consequence: Misclassification → Back taxes +滞纳金
✅ Correct Practice:
"Automotive Radiator Connector, Plastic/Brass, Model XYZ, OEM for Toyota Corolla 2020, IATF 16949 Certified, Part No. ABC123"
🎯 7. Conclusion: Professional Declaration, Save Time & Money!
🎯 Remember the Mnemonic:
🔹 "Auto 8708, Generic 3926, Metal 7412, Rubber 4016. Don't Mix!"
🔹 "HS Code Determines Fate, Tax Difference 25%, One Step Wrong, Thousands in Back Taxes!"
📌 Tips:
If your connector is originated from Vietnam, Mexico, Thailand, Malaysia, you can apply for IEEPA Exemption, tariff as low as 0%~5%.
Recommend Advance Ruling (Advance Ruling) to avoid clearance risks.
📣 Act Now:
📞 Contact Professional Customs Broker + Provide Product Pictures + Apply for HS Code Advance Ruling
🚀 Let Your Connector, Smooth Clearance, Efficient Export, Profit Doubling!
✨ Professional Clearance, Starting from Accurate Classification!
💼 Every Cent of Your Cost Deserves Precise Calculation!
Customer Reviews
About HS Code Classification
The Harmonized System (HS) is an internationally standardized nomenclature developed by the World Customs Organization (WCO) to classify traded products. Over 200 countries use the HS system as the basis for customs tariffs, trade statistics, and import/export regulations.
Each HS code follows a hierarchical structure:
- Chapter (2 digits) — Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) — More specific grouping within the chapter
- Subheading (6 digits) — Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) — Country-specific extensions for further classification, such as US HTSUS 10-digit codes
Correct HS code classification is essential for smooth customs clearance, accurate duty payment, and compliance with trade regulations. Misclassification can lead to customs delays, overpayment of duties, or penalties.
When importing from CN to US, the applicable tariff rates may include:
- Most-Favored-Nation (MFN) rate — The standard duty rate applied to WTO members
- General rate — Applied to countries without trade agreements
- Trade remedy duties — Additional tariffs such as Section 301 (anti-dumping), Section 232 (national security), or countervailing duties
The information provided on this page is for reference purposes only. For official classification, please consult with your local customs authority or a licensed customs broker.