The AEM 21-477P 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 Impreza WRX/WRX STI, Forester Turbo and SAAB 9-2X 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 relocated to the passenger-side wheel well which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable chrome-like 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 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 21-477P vehicle applications to determine the legal status for each vehicle.
Specifications:
| Description_DEF |
Engine Cold Air Intake Performance Kit |
| Description_DES |
Cold Air Intake System |
| Description_MKT |
The AEM 21-477P 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 Impreza WRX/WRX STI, Forester Turbo and SAAB 9-2X 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 relocated to the passenger-side wheel well which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable chrome-like 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 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 21-477P vehicle applications to determine the legal status for each vehicle. |
| Description_EXT |
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. |
| Description_INV |
Cold Air Intake System |
| Description_SHO |
Cold Air Intake Syst |
| Mass Air Flow Sensor Adapter Included |
Yes |
| Coupler Color/Finish |
Black |
| Air Filter Washable |
Yes |
| Intake Pipe Material |
Aluminum |
| Prop 65 Warning Label |
https://www.knfilters.com/images/l/prop65.jpg |
| Air Box Included |
No |
| Intake Pipe Color / Finish |
Polished |
| Intake Pipe Ports |
All intake tube ports needed for the specified applications are included |
| Air Filter Color |
Red |
| Air Filter Material |
Non-woven Synthetic |
| Clamp Color/Finish |
Natural |
| Clamp Style |
Regular |
| Clamps Included |
5 |
| Couplers Included |
1 |
| Oil Included |
No |
| Package Type |
Box |
| Product Style |
AEM Cold Air Intake System |
| Prop 65 - Short Label |
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov |
| Replacement Filter |
21-2038DK |
| Title |
AEM AEM-21-477P Cold Air Intake System |
| TUV Approved (Europe) |
No |
| Warranty |
Limited Lifetime |
| Weight |
5.8 lb (2.7 kg) |
| Air Filter Outlet Shape |
Round |
| CARB EO Number |
D-670-15 |
| Clamp Material |
Steel |
| Mounting Hardware Included |
Yes |
| Package Material |
Paperboard |
| Prop 65 (C, R or CR) |
CR |
| Prop 65 Yes/No |
Yes |
| Street Legal In All US States |
See Vehicle Applications |
| Length |
9.0000 |
| Width |
15.0000 |
| Height |
18.0000 |
| Weight |
6.0000 |
