Details
AEM Cold Air Intake
Increased horsepower
Tuned and dyno-tested to improve acceleration and engine sound
Low restriction aluminum tubing
Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
Washable and reusable oil-free filter media
AEM Lifetime Limited Warranty
The AEM 21-477 fits some Saab 9-2X, Subaru Forester Turbo, Subaru Impreza II WRX, Subaru Impreza WRX, and Subaru Impreza WRX STi models. See vehicle applications for details.
The AEM 21-477 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 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 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 21-477 vehicle applications to determine the legal status for each vehicle.
Specifications AEM 21-477 Product Specifications
Replacement Filter - 21-2038DK
Air Filter Color - Red
Air Filter Material - Non-woven Synthetic
Air Filter Outlet Shape - Round
Clamps Included - 5
Clamp Material - Steel
Clamp Style - Regular
Couplers Included - None
Product Style - AEM Cold Air Intake System
Air Filter Height - 8.125 in (206 mm)
Intake Pipe Color / Finish - Gunmetal Gray/Polished
Intake Pipe Material - Aluminum
CARB EO Number - D-670-15
Street Legal In All US States - Yes
TUV Approved (Europe) - No
Weight - 6 lb (2.7 kg)
Air Filter Large End Diameter - 6 in (152 mm)
Product Box Height - 8.5 in (216 mm)
Product Box Length - 18.25 in (464 mm)
Product Box Width - 14.5 in (368 mm)
Mounting Hardware Included - Yes
Applications:
2007 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2007 Subaru Impreza WRX 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2007 Subaru Impreza II WRX 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2006 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2006 Subaru Impreza WRX 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2006 Saab 9-2X 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2005 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2005 Subaru Forester Turbo 2.5L H4 F/I
Turbo Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2004 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2004 Subaru Forester Turbo 2.5L H4 F/I
Turbo Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
More Information
| Part Number | 21-477C, 21-477P |
|---|---|
| Brand | AEM |
| Type of Part | Intakes |
| Engine Fitment | 2.5L |
| Length | 18 |
| Width | 15 |
| Height | 9 |
| Weight | 6.000000 |
Reviews
Fitment
AEM Cold Air Intake
Increased horsepower
Tuned and dyno-tested to improve acceleration and engine sound
Low restriction aluminum tubing
Air filter lasts up to 100,000 miles before cleaning is required (depending on driving conditions)
Washable and reusable oil-free filter media
AEM Lifetime Limited Warranty
The AEM 21-477 fits some Saab 9-2X, Subaru Forester Turbo, Subaru Impreza II WRX, Subaru Impreza WRX, and Subaru Impreza WRX STi models. See vehicle applications for details.
The AEM 21-477 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 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 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 21-477 vehicle applications to determine the legal status for each vehicle.
Specifications AEM 21-477 Product Specifications
Replacement Filter - 21-2038DK
Air Filter Color - Red
Air Filter Material - Non-woven Synthetic
Air Filter Outlet Shape - Round
Clamps Included - 5
Clamp Material - Steel
Clamp Style - Regular
Couplers Included - None
Product Style - AEM Cold Air Intake System
Air Filter Height - 8.125 in (206 mm)
Intake Pipe Color / Finish - Gunmetal Gray/Polished
Intake Pipe Material - Aluminum
CARB EO Number - D-670-15
Street Legal In All US States - Yes
TUV Approved (Europe) - No
Weight - 6 lb (2.7 kg)
Air Filter Large End Diameter - 6 in (152 mm)
Product Box Height - 8.5 in (216 mm)
Product Box Length - 18.25 in (464 mm)
Product Box Width - 14.5 in (368 mm)
Mounting Hardware Included - Yes
Applications:
2007 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2007 Subaru Impreza WRX 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2007 Subaru Impreza II WRX 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2006 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2006 Subaru Impreza WRX 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2006 Saab 9-2X 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2005 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2005 Subaru Forester Turbo 2.5L H4 F/I
Turbo Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2004 Subaru Impreza WRX STi 2.5L H4 F/I
All Models Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
2004 Subaru Forester Turbo 2.5L H4 F/I
Turbo Street Legal In All US States:Yes
CARB EO Number: D-670-15 TUV Approved (Europe): No
