About AEM Air Intakes for Mercedes Benz: For years AEM has been at the forefront of the aftermarket scene, making quality air intake systems for vehicles. AEM Mercedes Benz air intake systems offer increases in both horsepower and torque, as well as offer improvements in engine efficiency and fuel economy. Each AEM Mercedes Benz air intake system is designed vehicle specific, meaning it will bolt right into your Mercedes Benz, requiring no additional modifications or parts. You can install an AEM air intake system onto a Mercedes Benz that has never been modified without needing to do anything else. AEM Mercedes Benz Air Intake Systems also will NOT void your warranty when installed correctly. AEM makes air intake systems for cars, trucks and suvs. AEM air intake systems feature AEM DryFlow air filters that are maintenance free, requiring no oil! The AEM DryFlow air filter also is 99.52% efficient, exceeding the filtration rate of most of the competition and keeping your engine cleaner. Now that you know the facts about our AEM air intake systems, isn't it time to bring your Mercedes Benz up to its potential? If you're not using an AEM intake, your Mercedes Benz may be moving, but it could be moving faster. The part number for this item is 21-781DS and it fits 2013-2017 Mercedes Benz CLA250 (2.0 Models). 50 State Legal.