brake fluid viscosity modifier
CN β US| HS Code | Tariff Rate | Origin | Destination | Doc |
|---|---|---|---|---|
| 381900 | 0.0% | CN | US | Official Doc |
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AI Analysis
π Brake Fluid Viscosity Modifier (Chemical Additives)
π HS Code Reference & Customs Clearance Guide | 2026 Latest Tariff Analysis | Professional Compliance Strategy
π I. Product Definition & Classification: What Exactly Is It?
Brake Fluid Viscosity Modifier is a specialized chemical additive used in automotive maintenance and industrial hydraulic systems. Its primary function is to adjust the viscosity index of brake fluids (typically DOT 3, DOT 4, or DOT 5.1), ensuring consistent performance across extreme temperature variations. It is not a standalone brake fluid, nor is it a simple lubricant. It is a complex chemical mixture designed to modify physical properties.
β οΈ Critical Distinction:
- If it is a pure chemical compound or mixture primarily used for its chemical properties (viscosity modification) β It falls under Chapter 38 (Miscellaneous Chemical Products).
- If it is a complete formulated brake fluid ready for use β It falls under 3819.00 (Brake fluids and other hydraulic brake fluids).
- Note: The term "Modifier" strongly implies it is an additive component, not the final end-product, but customs authorities often scrutinize this distinction heavily.
π¦ II. HS Code Classification Details (2026 Latest Tariff Authority)
| HS Code | Product Description | Application Scenario | Is it a Final Product? |
|---|---|---|---|
3819.00 |
Brake fluids and other hydraulic brake fluids (whether or not miscible with glycols or other substances) | Complete brake fluid solutions; fluid additives intended to be mixed directly into final brake fluid systems as a primary component | β οΈ Gray Area: Often classified here if marketed as "brake fluid additive" |
3811.21 |
Anti-knock preparations, oxidation inhibitors, viscosityζΉε agents, color inhibitors, or other prepared additives | Chemical additives for oils/greases/liquids not specifically excluded. This is the most accurate technical classification for "Viscosity Modifiers" | β Preferred Technical Fit |
3824.99 |
Other prepared binding agents for foundry molds; other chemical products and preparations (NES) | Generic chemical mixtures without specific heading coverage | β Less likely, but possible if non-specific |
2902.90 |
Other cyclic hydrocarbons | If the modifier is a pure chemical substance | β Rare for commercial modifiers |
π Key Clarification from Data:
The provided reference data explicitly states:
"No specific description can be provided as no content exists within thetag to describe the product's material, design features, or intended use for classification purposes."
However, it assigns HS Code381900.Interpretation:
- HS Code3819.00covers "Brake fluids and other hydraulic brake fluids."
- This implies the customs authority or the reference system treats the Viscosity Modifier as part of the brake fluid system or as a preparation primarily used in brake fluids, thus grouping it under the broader "Brake Fluids" category.
- Do not rely on technical arguments for Chapter 38.11 (3811.21) unless you have strong evidence it is a generic additive not specific to brake systems. The reference data locks it to 3819.00.
π° III. 2026 Latest Tariff Rate Details (Including Surcharges & Policy Add-ons)
β Applicable Country: United States (US)
β Origin: China (CN)
β Effective Date: November 10, 2025 (and subsequent imports)
π― 1. 3819.00 β Brake Fluids and Other Hydraulic Brake Fluids
| Item | Details |
|---|---|
| Base Tariff Rate | 0% (Ad Valorem) |
| USITC Surcharge | +25% (From USITC Footnote 9903.88.01, Section 301 Tariffs) |
| IEEPA Surcharge | +10% (For Chinese/HK products, under International Emergency Economic Powers Act, effective Nov 10, 2025) |
| Total Tariff Rate | 35% |
| Tax Calculation | CIF Value Γ 35% |
| De Minimis Exemption | β Not Eligible (deny_de_minimis) |
| Legal Path | IEEPA:9903.01.25 β IEEPA:9903.01.24 β USITC:3819.00 β FOOTNOTE:9903.88.01 |
π Explanation:
- Although brake fluids have a 0% base tariff, they are not exempt from Section 301 (25%) or IEEPA (10%) surcharges.
- The total cost impact is 35%, which is significant for high-volume automotive chemical imports.
- No de minimis relief means even small shipments are subject to full taxation.
π οΈ IV. Customs Clearance Operational Advice (Practical Pitfall Guide)
β 1. Documentation Checklist (Mandatory)
| Document | Required? | Notes |
|---|---|---|
| β Product Specification Sheet | βοΈ | Must clearly state: "Viscosity Modifier for Brake Fluid," not "Brake Fluid." However, HS is 3819.00, so align description with brake fluid context. |
| β MSDS (Material Safety Data Sheet) | βοΈ | Critical for hazmat classification. Ensure it matches the chemical composition declared. |
| β Certificate of Origin (CO) | βοΈ | To verify country of origin for IEEPA/301 applicability. |
| β Commercial Invoice | βοΈ | Must clearly describe as "Brake Fluid Viscosity Modifier" and include HS Code 3819.00. |
| β Packing List | βοΈ | Detail net/gross weight and container type. |
β 2. Declaration Tips (Key Phrases)
π₯ "Describe the Function, Align with HS 3819!"
| Scenario | Correct Declaration | Incorrect Declaration |
|---|---|---|
| Viscosity Modifier for Brake Fluid | "Brake Fluid Viscosity Modifier (HS 3819.00)" | "Chemical Additive" (Vague, may lead to audit) |
| Mixed with Brake Fluid | "Prepared Brake Fluid System" | "Untreated Chemicals" |
| Generic Hydraulic Additive | If NOT for brakes β 3811.21. But Data says 3819.00. |
Do not use 3811.21 if reference dictates 3819.00. |
π Warning:
- Even though "Viscosity Modifier" technically sounds like a chemical additive (3811.21), the provided data forces3819.00.
- Do not argue for3811.21unless you are prepared for a formal classification ruling. The data indicates this product is treated as part of the brake fluid ecosystem.
- Misdeclaration can lead to penalties, delays, and back-tariffs.
β 3. Special Cases
| Scenario | Recommendation |
|---|---|
| OEM vs. Aftermarket | No difference in HS Code. Ensure marketing materials do not claim "DOT Certification" unless certified. |
| Hazardous Material | Brake fluid modifiers are often flammable or corrosive. Ensure proper UN packaging and hazmat declarations. |
| Small Shipments | No de minimis exemption. Factor 35% tax into cost for all shipments, including samples. |
π V. Global Market Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff | Certification | Notes |
|---|---|---|---|---|
| πΊπΈ USA | 3819.00 |
35% (China) | None specific, but hazmat compliance required | High surcharge due to IEEPA/301 |
| π¨π³ China | 3819.00 |
0% | None | Low tariff for domestic use |
| πͺπΊ EU | 3819.00 |
0% | REACH Registration Required | No surcharges, but REACH is strict |
| π―π΅ Japan | 3819.00 |
0% | JIS Standard | No surcharges |
π Conclusion:
- USA is the most expensive market for this product due to 35% total tariff.
- EU and Japan offer better tariff conditions but have strict chemical registration requirements (REACH, JIS).
π VI. Common Errors & Pitfalls (Lessons Learned)
β Error 1: Classifying as 3811.21 (Other Chemicals)
π Consequence: Misclassification under provided data (3819.00). Risk of penalty and back-tariffs.
π Fix: Stick to 3819.00 as per reference.
β Error 2: Claiming De Minimis Exemption for Small Shipments
π Consequence: 35% tax applied retroactively + fines.
π Fix: Always declare and pay 35% tax, regardless of shipment size.
β Error 3: Vague Description ("Chemical Mix")
π Consequence: Customs hold for inspection, leading to delays.
π Fix: Use precise terms: "Brake Fluid Viscosity Modifier for Automotive Use."
π― VII. Conclusion: Professional Compliance, Cost Efficiency!
π― Key Takeaway:
πΉ "HS Code
3819.00is locked. Total Tariff 35%. No De Minimis."
πΉ "Even if it's a 'modifier,' it's treated as 'brake fluid' in this context."
π Pro Tip:
- If you are importing from China to the US, the 35% tariff is unavoidable. Consider supply chain adjustments (e.g., third-country processing) if volume is high, though this requires careful legal compliance.
- Always obtain a Pre-Ruling from US Customs if unsure, but note that the reference data strongly suggests 3819.00.
π£ Immediate Action:
π Consult with a licensed customs broker.
π Prepare MSDS and Commercial Invoice with correct HS Code3819.00.
π° Budget for 35% total tariff cost.
β¨ Professional clearance starts with accurate classification!
πΌ Your cost savings depend on precise declaration!
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) β Broad category of goods (e.g., Chapter 84: Machinery and Mechanical Appliances)
- Heading (4 digits) β More specific grouping within the chapter
- Subheading (6 digits) β Internationally standardized breakdown, used by all WCO member countries
- National subdivisions (8-10 digits) β 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 β The standard duty rate applied to WTO members
- General rate β Applied to countries without trade agreements
- Trade remedy duties β 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.