AFE Stage 1 Cold Air Intake Type Cx 05-06 Chrysler 300C 5.7L - P/N: 54-10711 Product Model: AFE-54-10711 Features - Replaces factory air filter. - Replaces factory air box. - Black textured molded tube. - 16-gauge powder-coated steel heat shield. - Radial universal cone filter. Benefits - Increases up to 25 HP. - Improved airflow for more torque and better performance. - Improved velocity for better acceleration. - Reduces heat transfer to intake air. - Durable and corrosion resistant, blocks out engine heat. With the Magnum FORCE Stage 1 intake system, we replace the stock air box and the stock air filter. By replacing the restrictive air box and air filter, there is a noticeable improvement in airflow and power. However, Stage 1 retains the stock intake tract. Our engineers can develop a Stage 1 system kit quickly because we are not tackling the stock intake tube, which often interfaces with the factory Mass Airflow Sensor. It is still a challenge to make sure that the Check Engine Light does not come on but not as challenging as when you are replacing the entire intake tract.