The AEM 21-451R Performance Cold Air Intake System is designed to enhance your engine’s horsepower and torque by replacing the restrictive factory air filter and intake housing on select Ford Focus SVT models. This high-performance system has been engineered, tuned, and dyno-tested to deliver improved airflow and efficiency. It features a large, oil-free AEM Dryflow synthetic air filter that offers superior filtration and can last up to 100,000 miles before cleaning, depending on driving conditions. The filter is strategically relocated to the driver-side wheel well, drawing in cooler air to help reduce intake temperatures and increase power output. The intake tube is constructed from mandrel-bent aluminum and finished with a durable red powder coat for both performance and visual appeal. This system also accommodates factory emissions control components, including the mass air flow sensor (MAF) and comes with a replacement silicone engine breather hose to ensure proper fit and function.