• AEM Cold Air Intake System | 2006-2007 Subaru WRX and 2006 Subaru WRX STI (21-477C)
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AEM Cold Air Intake System | 2006-2007 Subaru WRX and 2006 Subaru WRX STI (21-477C)

AEM Cold Air Intake System | 2006-2007 Subaru WRX and 2006 Subaru WRX STI (21-477C)

21-477C

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$361.98 USD
$399.99 USD $361.98 USD
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The AEM Cold Air Intake System for 2006-2007 Subaru WRX and 2006 Subaru WRX STI is a high-performance upgrade designed to enhance engine airflow and increase horsepower and torque. Constructed with an oversized AEM Dryflow synthetic washable air filter, this system reduces restrictions in the factory air intake housing, allowing for improved air intake efficiency. The intake was specifically engineered, tuned, and dyno-tested to optimize performance on Subaru Impreza WRX, WRX STI, Forester Turbo, and SAAB 9-2X models. Its design promotes better airflow, resulting in increased engine responsiveness and overall power output, making it an ideal choice for enthusiasts seeking reliable performance gains.

This intake system is compatible with 2006-2007 Subaru WRX and 2006 Subaru WRX STI models, fitting vehicles equipped with turbocharged engines. It is a direct bolt-on replacement for the factory air intake, requiring minimal modifications for installation. The kit includes the intake tube, washable air filter, and necessary mounting hardware. Suitable for street and performance driving, this system enhances airflow and engine efficiency, providing a noticeable improvement in throttle response and power delivery for daily drivers and track enthusiasts alike.

Overview

2006-2007 Subaru WRX and 2006 Subaru WRX STI Cold Air Intake System by AEM

The AEM 21-477C 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 21-477C vehicle applications to determine the legal status for each vehicle.

Features

  • 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

Benefits

  • Increased horsepower
  • Tuned and dyno-tested to improve acceleration and engine sound

Applications

  • 2006-2007 Subaru WRX
  • 2006 Subaru WRX STI

What's In The Box?

  • 1 - Cold Air Intake System

Warranty

  • AEM's Standard Limited Warranty
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