| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8487900080 | Doc | 83.9% | CN | US | 2025-05-12 |
| 8487900040 | Doc | 58.9% | CN | US | 2025-05-12 |
| 7326908688 | Doc | 82.9% | CN | US | 2025-05-12 |
| 7325100080 | Doc | 55.0% | CN | US | 2025-05-12 |
| 7325995000 | Doc | 82.9% | CN | US | 2025-05-12 |
| 2942005000 | Doc | 58.7% | CN | US | 2025-05-12 |
| 2942003500 | Doc | 61.5% | CN | US | 2025-05-12 |
| 3926903000 | Doc | 59.2% | CN | US | 2025-05-12 |
| 3926909989 | Doc | 42.8% | CN | US | 2025-05-12 |
| 3925900000 | Doc | 60.3% | CN | US | 2025-05-12 |
| 3925100000 | Doc | 61.3% | CN | US | 2025-05-12 |
Rocker Cover
A rocker cover, also known as a valve cover, is a component of an internal combustion engine that sits atop the cylinder head, covering the valve train. Its primary function is to protect the valves, valve springs, and rocker arms from contaminants and to prevent oil leakage.
Material:
- Cast Aluminum: The most common material due to its lightweight nature and good heat dissipation properties.
- Plastic: Increasingly used in modern engines to reduce weight and cost. Often reinforced with fiberglass.
- Steel: Found in older engine designs or high-performance applications where greater strength is required.
Purpose:
- Contamination Protection: Shields the valve train from dirt, dust, and debris, which can cause wear and damage.
- Oil Containment: Prevents oil from splashing or leaking out of the valve train area.
- Oil Circulation: Often incorporates channels or baffles to aid in oil return to the oil pan.
- Ventilation: Many rocker covers include a Positive Crankcase Ventilation (PCV) system connection to regulate pressure within the crankcase.
Function:
The rocker cover doesn’t actively participate in the combustion process. Instead, it acts as a protective housing. It seals the cylinder head, maintaining the oil level within the valve train and ensuring proper lubrication. The cover typically features a gasket to create a tight seal against the cylinder head.
Usage Scenarios:
- All Internal Combustion Engines: Found on virtually all engines utilizing overhead valve (OHV), overhead cam (OHC), and double overhead cam (DOHC) configurations.
- Engine Maintenance: Removal is required for valve adjustments, valve spring replacement, and other valve train repairs.
- Performance Modifications: Aftermarket rocker covers are often used for aesthetic purposes or to incorporate features like oil catch cans.
Common Types:
- Stamped Steel Covers: Older designs, generally less expensive but can be prone to corrosion.
- Cast Aluminum Covers: The most prevalent type, offering a good balance of cost, weight, and durability.
- Plastic Covers: Lighter and more cost-effective, but may be less durable than aluminum.
- Fin-Style Covers: Aftermarket covers designed for improved heat dissipation and aesthetic appeal.
- Billet Aluminum Covers: High-performance covers machined from a solid block of aluminum, offering superior strength and appearance.
Based on the provided information, identifying the precise HS code for "rocker cover" requires understanding its material composition and specific application. Here are potential HS codes based on the available data:
- 8487900080: Machinery parts, not containing electrical connectors, insulators, coils, contacts or other electrical features, and not specified or included elsewhere in this chapter: Other. This code applies to various machinery parts lacking electrical components. If the rocker cover is a general mechanical part without any electrical features, this could be applicable. The base tariff is 3.9%, with an additional 25.0% tariff, increasing to 30.0% after April 2, 2025. A further 25% tariff applies to steel or aluminum products, resulting in a total tariff of 83.9%.
- 7326908688: Other articles of iron or steel: Other: Other: Other: Other. This code covers a broad range of iron or steel articles. If the rocker cover is made of iron or steel and doesn't fall under more specific categories, this could be relevant. The base tariff is 2.9%, with an additional 25.0% tariff, increasing to 30.0% after April 2, 2025. A further 25% tariff applies to steel or aluminum products, resulting in a total tariff of 82.9%.
- 7325100080: Other cast articles of iron or steel: Of nonmalleable cast iron Other. If the rocker cover is manufactured using a non-malleable cast iron process, this HS code might be suitable. The base tariff is 0.0%, with an additional 25.0% tariff, increasing to 30.0% after April 2, 2025, resulting in a total tariff of 55.0%.
- 7325995000: Other cast articles of iron or steel: Other: Other: Other. This code applies to other cast iron or steel articles not specifically classified elsewhere. If the rocker cover is a cast iron or steel part and doesn't fall under more specific categories, this could be applicable. The base tariff is 2.9%, with an additional 25.0% tariff, increasing to 30.0% after April 2, 2025. A further 25% tariff applies to steel or aluminum products, resulting in a total tariff of 82.9%.
Important Considerations:
Regarding HS codes 8487900080, 7326908688, 7325100080, and 7325995000, please note that a 25% additional tariff applies to steel or aluminum products. It is crucial to verify the material composition of the rocker cover to determine the correct tariff rate.