About AEM Air Intakes for Nissan : For years AEM has been at the forefront of the Nissan aftermarket scene, making quality air intake systems for Nissan vehicles. AEM Nissan air intake systems offer increases in both horsepower and torque, as well as offer improvements in engine efficiency and fuel economy. Each AEM Nissan air intake system is designed vehicle specific, meaning it will bolt right into your Nissan , requiring no additional modifications or parts. You can install an AEM air intake system onto a Nissan that has never been modified without needing to do anything else. AEM Nissan Air Intake Systems also will NOT void your Nissan 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 Nissan up to its potential? If you're not using an AEM intake, your Nissan may be moving, but it could be moving faster. The part number for this item is 21-821DS and it fits 2009-2017 Nissan 370Z models.