AEM Induction Systems / 21-478C
Part #: 21-478C
UPC: 024844391216
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Description: AEM's mandrel-bent aluminum cold air intake systems are guaranteed to provide an increase in horsepower and torque, and are protected by the AEM Lifetime Limited Warranty.
Description:
This is a Test Product Message for the Air Intakes Category!
Description
AEM cold air intake systems are designed to increase horsepower and torque. The system includes an oversized AEM DRYFLOW synthetic washable air filter, engineered to provide outstanding airflow, filtration, and performance, and also features a mandrel-bent aluminum intake tube and high quality hardware. The oversized, conical filter design allows you to go up to 100,000 miles between filter services under normal highway driving conditions. A custom heat shield helps protect intake air from the high temperature of your engine bay, and the factory fresh air duct attaches to the heat shield. The entire system can typically be installed in less than 90 minutes.
Features & benefits
- Precision-tuned and dyno-validated to enhance throttle response, sharpen acceleration, and improve overall engine efficiency, helping maximize horsepower and drivability.
- Creates a deeper, more aggressive induction tone that highlights the intake system’s improved airflow.
- Features low-restriction intake tubing that increases air velocity and high-volume airflow for maximum performance gains.
- Equipped with a long-life, high-capacity air filter capable of up to 100,000 miles before servicing (depending on driving conditions), reducing maintenance while maintaining strong, clean airflow.
- Utilizes washable, reusable, oil-free synthetic filter media that preserves airflow efficiency, traps harmful contaminants, and provides long-term value over disposable filters.
Information
Associated products: AEM-1-1000 Air Filter Cleaner
Application summary
| Year | Make / model |
|---|---|
| 2008-2014 | Subaru Impreza |
| 2012-2014 | Subaru WRX |
| 2013-2014 | Subaru WRX STI |
Specifications
- GTIN
- 00024844391216
- Weight
- 7.36 lb
- Height
- 12.25 in
- Length
- 20.25 in
- Width
- 12.25 in
- EO
- Not in CA
- Life cycle
- Available to Order
- Alt. part number
- AEM-21-478C
- AAM brand code
- AEK
- Warehouse brand code
- AEK
- AAIA brand code
- DSHD
Attributes
- Air Box Included
- No
- Air Filter Color
- Red
- Air Filter Material
- Non-woven Synthetic
- Air Filter Outlet Shape
- Round
- Air Filter Washable
- Yes
- Alternate Part Number
- AEM-21-478C
- California Proposition 65
- WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
- California Restricted
- Not legal for sale or use in California
- Clamp Color/Finish
- Natural
- Clamp Material
- Stainless Steel
- Clamp Style
- Worm Gear
- Clamps Included
- 2
- Coupler Color/Finish
- Black
- Couplers Included
- 1
- Estimated Horsepower Gain
- 36 HP @ 5300 RPM
- Horse Power Increase
- 36 HP
- Intake Pipe Color / Finish
- Gunmetal Gray
- Intake Pipe Material
- Aluminum
- Intake Pipe Ports
- All intake tube ports needed for the specified applications are included
- Mass Air Flow Sensor Adapter Included
- No
- Mounting Hardware Included
- Yes
- Oil Included
- No
- Package Material
- Corrugated
- Package Type
- Box
- Product Style
- AEM Cold Air Intake System
- RPM
- 5300
- Replacement Filter
- 21-2129D
- Street Legal In All US States
- Not legal for sale or use in California on any pollution controlled motor vehicle.
- TUV Approved (Europe)
- No
- Title
- AEM AEM-21-478C Cold Air Intake System
- Warranty
- Limited Lifetime
- Weight
- 7.4 lb (3.3 kg)
Fitment status
Select a vehicle or engine to see whether this part applies to your application.
Application summary
2008-2014 Subaru Impreza; 2012-2014 Subaru WRX; 2013-2014 Subaru WRX STI
AEM Induction Systems 21-478C
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