A cold air intake is an aftermarket automotive component designed to improve an engine's performance. It replaces the factory air intake system, allowing cooler air to enter the engine. Cooler air is denser and contains more oxygen, which can enhance combustion efficiency and increase horsepower. By using a cold air intake, drivers may experience improved throttle response and better fuel efficiency. These systems often feature larger diameter tubing and high-flow air filters, which help reduce airflow restrictions. Many car enthusiasts install cold air intakes to optimize their vehicles, particularly in performance-oriented models like those from Ford, Chevrolet, or Honda.