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Description
AEM 08-11 WRX/STi Wrinkle Red Cold Air IntakeThe AEM 21 478WR 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, WRX STI, Impreza WRX and Impreza WRX STI models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air
The AEM 21-478WR 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, WRX STI, Impreza WRX and Impreza WRX STI 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 textured red 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 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 21-478WR vehicle applications to determine the legal status for each vehicle.Installation Instructions
User 1
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2011 | Subaru | Impreza | 2.5i |
| 2011 | Subaru | Impreza | 2.5i Premium |
| 2011 | Subaru | Impreza | Outback Sport |
| 2008-2014 | Subaru | Impreza | WRX |
| 2010-2014 | Subaru | Impreza | WRX Limited |
| 2009-2014 | Subaru | Impreza | WRX Premium |
| 2008-2014 | Subaru | Impreza | WRX STI |
| 2011-2014 | Subaru | Impreza | WRX STI Limited |
| 2010 | Subaru | Impreza | WRX STI Special Edition |
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4.7 ★★★★★
Based on 2019 reviews
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Product Reviews
★★★★★ 5
Five Stars
Format: Hardcover
Love this book, extremely useful for some atypical joint injections
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2015
★★★★★ 5
Good reference
Format: Paperback
Great reference for med students and physicians
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Reviewed in the United States on November 14, 2025
★★★★★ 5
Great find
Format: Paperback
I love this card deck. It has great picture quality of each dx with different areas of the body it can appear on. It has treatment plan for each. Lists different topical steroids and strength. I just wish the paper themselves was thicker.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2025
★★★★★ 5
Great resource!
Format: Paperback
This dermatology resource is great. Created by some of the authors that wrote very good dermatology books. This deck is very colorful and has a lot of explanations. It shows different stages of the various skin conditions. It also gives detailed things to look for and treatment recommendations on the back of each card. Only negative is that the pages are a bit thin. Overall great resource!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 4, 2024
★★★★★ 5
Really helpful
Format: Paperback
I work in a minute clinic and derm is not my strong suit. This is a great reference with pictures to help when I'm a little unsure!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 16, 2024