About AEM Air Intakes for Mazda : For years AEM has been at the forefront of the Mazda aftermarket scene, making quality air intake systems for Mazda vehicles. AEM Mazda air intake systems offer increases in both horsepower and torque, as well as offer improvements in engine efficiency and fuel economy. Each AEM Mazda air intake system is designed vehicle specific, meaning it will bolt right into your Mazda , requiring no additional modifications or parts. You can install an AEM air intake system onto a Mazda that has never been modified without needing to do anything else. AEM Mazda Air Intake Systems also will NOT void your Mazda 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 Mazda up to its potential? If you're not using an AEM intake, your Mazda may be moving, but it could be moving faster. The part number for this item is 21-773C and it fits 2015-2018 Mazda 3 (2.0 Models) models.