fits model: Si, Civic. make: Honda. year: 2006–2011.

( Brand: Advanced Engine Management ), ( Manufacturer Part Number: 21-685P ), ( Part Type: Intake )
The AEM 21-685P Air Intake System is a high-performance upgrade for the 2006-2011 Honda Civic SI, specifically designed for vehicles equipped with the advanced engine management system. This air intake system is a direct replacement for the factory intake, providing improved airflow and horsepower without requiring any modifications to the engine management system.
The AEM 21-685P Air Intake System is constructed from high-quality materials, including a polished aluminum intake tube and a washable and reusable synthetic air filter. The intake tube features a mandrel-bent design to ensure smooth airflow, and the filter is designed to capture up to 99% of dirt, dust, and other contaminants, protecting your engine from harmful debris.
The air intake system also features a unique design that allows for a cold-air intake, drawing in cooler air from outside the engine bay. This cooler air is denser and can provide more oxygen to the engine, resulting in improved combustion and increased horsepower.
The AEM 21-685P Air Intake System is easy to install, requiring no modifications to the engine or engine management system. The system comes with all necessary hardware, including mounting brackets and clamps, and includes detailed installation instructions to ensure a trouble-free installation.
Overall, the AEM 21-685P Air Intake System is a high-quality upgrade for the 2006-2011 Honda Civic SI, providing improved airflow, increased horsepower, and a cold-air intake design for improved combustion. It is a reliable and durable product, backed by AEM's limited lifetime warranty.
Pros of buying a AEM 21-685P Air Intake for Honda Civic SI (2006-2011):1. Improved engine performance: The AEM air intake system is designed to increase horsepower and torque, providing better acceleration and overall performance.
2. High-quality materials: AEM uses high-density polyethylene (HDPE) and silicone for the air intake system, ensuring durability and longevity.
3. Easy installation: The AEM 21-685P Air Intake comes with detailed instructions and is relatively easy to install, even for those with limited mechanical skills.
4. Enhanced sound: The AEM air intake system provides a more aggressive engine sound, adding to the driving experience.
Cons of buying a AEM 21-685P Air Intake for Honda Civic SI (2006-2011):1. Higher cost: Compared to some other air intake systems, the AEM 21-685P Air Intake is more expensive.
2. Potential for increased engine noise: While some people enjoy the more aggressive engine sound, others may find it to be too loud.
3. Potential for increased maintenance: The AEM air intake system may require more frequent maintenance than some other options, such as replacing the filter more often.
Recommendation:The AEM 21-685P Air Intake is a high-quality air intake system that can provide significant improvements in engine performance for Honda Civic SI (2006-2011) owners. However, it is important to consider the higher cost and potential for increased engine noise and maintenance before making a purchase. Ultimately, if you are looking for improved performance and are willing to pay a premium, the AEM 21-685P Air Intake could be a worthwhile investment. But if you are looking for a more budget-friendly option or prefer a quieter engine sound, there may be other air intake systems that better fit your needs.
Our cold air systems are Dino-proven and tested against the competition to create more usable power than any other system of their kind. All aem cold air systems are either 50-state legal or pending excluding off road and hybrid, include a lifetime dry flow synthetic filter come with limited warranty. Please see the for information regarding shipping costs and available methods.
Tuning the inlet pipe in length and diameter to match Engines resonance helps move more air cylinders think of your Engine as a big pump, no company on market can tune an well we.
Purchase from map to receive aggressive pricing and retain your manufacturers warranty. A cold air intake system relocates the filter outside of Engine compartment to deliver coolest inlet temperatures possible.
Cooler air carries more oxygen, which translates into a intense explosion in the combustion chamber to create horsepower and torque.