AEM Induction 21-821DS Performance Cold Air Intake System for Nissan 370Z 3.7L

The 21-821DS Performance Cold Air Intake System produces horsepower and torque gains by replacing the restrictive air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Nissan 370Z models. This system replaces both the left and right side intakes. The AEM Dryflow synthetic washable air filter does not require oiling and can be used up to 100,000 miles before servicing is needed (depending on driving conditions). The heatshield is a two piece design and also utilizes the factory air ducting. The intake tube is constructed from mandrel bent aluminum and has a durable gray powder coat finish. This air intake system was developed to accommodate the mass air flow sensor and PCV hose. The air intake system is backed by AEM's Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards, while others are 50 state legal. View the 21-821DS vehicle applications to determine the legal status for each vehicle. The 21-821DS Performance Cold Air Intake System produces horsepower and torque gains by replacing the restrictive air filter and air intake housing. This system replaces both the left and right side intakes. Associated products: AEM-1-4000 Air Filter Wrap, AEM-21-202DOSK SPECIAL ORDER AEM DryFlow Fltr, AEM-1-1000 Air Filter Cleaner

• Utilizes washable, reusable, oil-free synthetic filter media that preserves airflow efficiency, traps harmful contaminants, and provides long-term value over disposable filters.
• AEM Lifetime Limited Warranty

The AEM Induction 21-821DS Performance Cold Air Intake System is engineered for select Nissan 370Z models equipped with the 3.7L engine. By replacing the restrictive factory air filters and intake housings on both the left and right sides, this system is designed to improve airflow and support horsepower and torque gains. Each application is tuned and dyno-tested for vehicle-specific performance, helping provide consistent operation while retaining compatibility with the factory mass air flow sensors and PCV hoses.

The system uses AEM Dryflow synthetic washable air filters with oil-free media that helps preserve airflow efficiency while trapping harmful contaminants. The filters can be cleaned and reused for up to 100,000 miles before servicing may be required, depending on driving conditions. A two-piece heat shield works with the factory air ducting to help isolate the intake from engine-bay heat. Mandrel-bent aluminum intake tubes feature a durable gray powder-coat finish for lasting protection and a clean installation appearance.

Key Product Specifications & Technical Data

• Brand: AEM Induction
• Part Number: 21-821DS
• Product Type: Performance cold air intake system
• Vehicle Application: Select Nissan 370Z models
• Engine Application: 3.7L V6
• Filter Type: Washable, reusable, oil-free synthetic Dryflow media
• Intake Construction: Mandrel-bent aluminum tubes with gray powder-coat finish
• Emissions Information: EPA compliant; California legality varies by vehicle application and should be verified before installation

What's Included

• Dual-sided AEM 21-821DS cold air intake system
• Washable AEM Dryflow synthetic air filters
• Two-piece heat shield assembly
• Vehicle-specific intake tubes and installation components

Fitment includes select 2009–2013 Nissan 370Z applications with the 3.7L engine. Confirm the vehicle year, configuration, and emissions requirements before ordering. The system is backed by AEM's Lifetime Limited Warranty. Optional associated products include the AEM Air Filter Wrap, Dryflow replacement filter, and AEM Air Filter Cleaner.

Features:

• Performance Airflow: Replaces restrictive factory air filters and intake housings to support horsepower and torque gains.
• Dual-Intake Design: Replaces both the left and right side intake assemblies on compatible Nissan 370Z models.
• Oil-Free Dryflow Filtration: Washable, reusable synthetic filter media provides efficient airflow and contaminant protection without filter oil.
• Heat Management: Two-piece heat shields work with factory air ducting to help reduce exposure to engine-bay heat.
• Durable Construction: Mandrel-bent aluminum intake tubes feature a protective gray powder-coat finish.
• Vehicle-Specific Engineering: Tuned and dyno-tested for select Nissan 370Z 3.7L applications.
• Sensor and Hose Compatibility: Designed to accommodate factory mass air flow sensors and PCV hoses.
• Long-Term Coverage: Backed by AEM's Lifetime Limited Warranty.

Fitments:
2009 Nissan 370Z Base
2009 Nissan 370Z Nismo
2009 Nissan 370Z Touring
2010 Nissan 370Z 40th Anniversary Edition
2010 Nissan 370Z Base
2010 Nissan 370Z Nismo
2010 Nissan 370Z Touring
2011 Nissan 370Z Base
2011 Nissan 370Z Nismo
2011 Nissan 370Z Touring
2012 Nissan 370Z Base
2012 Nissan 370Z Nismo
2012 Nissan 370Z Touring
2013 Nissan 370Z Base
2013 Nissan 370Z Nismo
2013 Nissan 370Z Touring
2014 Nissan 370Z Base
2014 Nissan 370Z Nismo
2014 Nissan 370Z Touring
2015 Nissan 370Z Base
2015 Nissan 370Z Nismo
2015 Nissan 370Z Nismo Tech
2015 Nissan 370Z Sport
2015 Nissan 370Z Sport Tech
2015 Nissan 370Z Touring
2015 Nissan 370Z Touring Sport
2016 Nissan 370Z Base
2016 Nissan 370Z Nismo
2016 Nissan 370Z Nismo Tech
2016 Nissan 370Z Sport
2016 Nissan 370Z Sport Tech
2016 Nissan 370Z Touring
2016 Nissan 370Z Touring Sport
2017 Nissan 370Z Base
2017 Nissan 370Z Nismo
2017 Nissan 370Z Nismo Tech
2017 Nissan 370Z Sport
2017 Nissan 370Z Sport Tech
2017 Nissan 370Z Touring
2017 Nissan 370Z Touring Sport
2018 Nissan 370Z Base
2018 Nissan 370Z Heritage Edition
2018 Nissan 370Z Nismo Tech
2018 Nissan 370Z Sport
2018 Nissan 370Z Sport Tech
2018 Nissan 370Z Touring
2018 Nissan 370Z Touring Sport
2019 Nissan 370Z Base
2019 Nissan 370Z Heritage Edition
2019 Nissan 370Z Nismo
2019 Nissan 370Z Sport
2019 Nissan 370Z Sport Touring
2019 Nissan 370Z Touring
2020 Nissan 370Z Base
2020 Nissan 370Z Nismo
2020 Nissan 370Z Sport
2020 Nissan 370Z Sport Touring

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-670-25
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1