AEM Induction 21-732C Performance Cold Air Intake System for 2015-2018 Subaru WRX 2.0L

The AEM 21-732C Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Subaru WRX models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the original air box space and is protected by a heat shield which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable gunmetal gray powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor. The tapered cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). The air intake system is easy to install with commonly available tools and it 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 21-732C vehicle applications to determine the legal status for each vehicle. AEM's Performance Cold Air Intake Systems are designed, tuned and dyno-tested to give your engine more power and acceleration by replacing the restrictive factory air filter, air intake tubing and air box assembly. Associated products: AEM-1-4007 Air Filter Wrap, AEM-21-2027DK AEM DryFlow Air Filter, 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 21-732C Performance Cold Air Intake System is designed for select 2015-2018 Subaru WRX models equipped with the 2.0L H4 engine. By replacing the restrictive factory air filter, intake tubing, and airbox assembly, this system helps improve airflow to support increased horsepower, torque, throttle response, and acceleration. The intake was specifically engineered, tuned, and dyno-tested for the Subaru WRX platform.

Incoming air passes through an oversized AEM Dryflow synthetic air filter positioned within the original airbox area. The included heat shield helps isolate the filter from hot engine-bay air, supporting cooler intake temperatures and consistent performance. The washable, reusable, oil-free filter media provides efficient airflow and filtration while eliminating the need for filter oil. Depending on driving conditions, the filter may be used for up to 100,000 miles before cleaning is required.

The intake tube is manufactured from mandrel-bent aluminum and finished with a durable gunmetal gray powder coat. The system is designed to retain compatibility with factory emissions-control equipment, including the mass airflow sensor, and installs using commonly available tools. AEM backs this system with a Lifetime Limited Warranty. This application is EPA compliant and carries California emissions certification under Executive Order D-670-26; verify local requirements before purchase. Related accessories include the AEM Air Filter Wrap, DryFlow replacement filter, and air filter cleaner.

Product Specifications & Technical Data

• Brand: AEM Induction
• Part Number: 21-732C
• Product Type: Performance cold air intake system
• Engine Application: 2.0L H4 turbocharged gasoline engine
• Filter Type: Washable, reusable, oil-free synthetic Dryflow filter
• Intake Tube Material: Mandrel-bent aluminum
• Finish: Gunmetal gray powder coat
• Emissions Status: EPA compliant; California Executive Order D-670-26

What's Included

• Aluminum intake tube
• AEM Dryflow synthetic air filter
• Heat shield
• Mounting hardware and installation components
• Installation instructions

Fitment: 2015-2018 Subaru WRX with 2.0L H4 engine, including applicable trim configurations. Confirm vehicle-specific application details before installation.

Features:

• Performance airflow: Replaces restrictive factory intake components to support improved horsepower, torque, throttle response, and acceleration.
• Dryflow filtration: Uses washable, reusable, oil-free synthetic filter media for efficient airflow and long-term filtration performance.
• Heat protection: Positions the filter in the factory airbox area and includes a heat shield to help reduce exposure to hot engine-bay air.
• Durable construction: Features mandrel-bent aluminum tubing with a gunmetal gray powder-coated finish and includes AEM's Lifetime Limited Warranty.

Fitments:
2015 Subaru WRX Base
2015 Subaru WRX Limited
2015 Subaru WRX Premium
2016 Subaru WRX Base
2016 Subaru WRX Limited
2016 Subaru WRX Premium
2017 Subaru WRX Base
2017 Subaru WRX Limited
2017 Subaru WRX Premium
2018 Subaru WRX Base
2018 Subaru WRX Limited
2018 Subaru WRX Premium
2019 Subaru WRX Base
2019 Subaru WRX Limited
2019 Subaru WRX Premium
2020 Subaru WRX Base
2020 Subaru WRX Limited
2020 Subaru WRX Premium

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-670-26
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1