K&N Engineering
KNN57-0626
K&N Engineering

K&N 02-07 WRX/STi 57i Performance Intake Kit

$124.92

Description

Experience a noticeable boost in power and throttle response with the K&N 57i Series induction kit. This performance intake kit replaces the factory air box with a design specifically engineered to increase horsepower and acceleration, delivering improved engine sound and enhanced airflow throughout the RPM range.

Key Features

• Designed to increase horsepower and acceleration while providing broader airflow than OEM filters.
• Replaces the restrictive factory air box for improved throttle response and engine efficiency.
• Washable, reusable filter with an extended service life of up to 100,000 miles.
• Easy to install, usually in 90 minutes or less, with high-quality adapters constructed from steel, aluminum, silicone, or reinforced nylon.
• Provides a consistent power curve and improved engine sound.

Specifications & Compatibility

• 2007 Subaru Impreza 2.5i
• 2007 Subaru Impreza Outback Sport
• 2002-2007 Subaru Impreza WRX
• 2006-2007 Subaru Impreza WRX Limited
• 2005-2007 Subaru Impreza WRX STI
• 2007 Subaru Impreza WRX STI Limited
• 2006-2007 Subaru Impreza WRX TR

Installation &

Installation instructions can be reviewed here. Enjoy a reliable aftermarket performance upgrade backed by our dedication to durability and quality. Please note: This kit is not compliant with California emissions regulations.

Explore additional performance solutions in our Air Intake Systems collection.

Experience a noticeable boost in power and throttle response with the K&N 57i Series induction kit. This performance intake kit replaces the factory air box with a design specifically engineered to increase horsepower and acceleration, delivering improved engine sound and enhanced airflow throughout the RPM range.

Key Features

• Designed to increase horsepower and acceleration while providing broader airflow than OEM filters.
• Replaces the restrictive factory air box for improved throttle response and engine efficiency.
• Washable, reusable filter with an extended service life of up to 100,000 miles.
• Easy to install, usually in 90 minutes or less, with high-quality adapters constructed from steel, aluminum, silicone, or reinforced nylon.
• Provides a consistent power curve and improved engine sound.

Specifications & Compatibility

• 2007 Subaru Impreza 2.5i
• 2007 Subaru Impreza Outback Sport
• 2002-2007 Subaru Impreza WRX
• 2006-2007 Subaru Impreza WRX Limited
• 2005-2007 Subaru Impreza WRX STI
• 2007 Subaru Impreza WRX STI Limited
• 2006-2007 Subaru Impreza WRX TR

Installation &

Installation instructions can be reviewed here. Enjoy a reliable aftermarket performance upgrade backed by our dedication to durability and quality. Please note: This kit is not compliant with California emissions regulations.

Explore additional performance solutions in our Air Intake Systems collection.

Frequently Asked Questions

Feel Free To Ask Anything!

What payment methods do you accept for online purchases?

We accept all major credit cards, PayPal, Shop Pay, and Apple Pay for your convenience. Once your order ships, you'll receive a tracking number via email.

How long does shipping usually take?

In stock items typically ship in 24-48 hours. Out of stock items can take longer.

Can I return an item if I'm not satisfied?

Yes, we have a 30-day return period. You can view our Return & Refund Policy page for more details - Return & Refund Policy.

Do you offer gift cards?

Yes! They are the perfect gift for those times when you don't know exactly what to get or need something at the last minute. Great for any time of the year as well as those special occasions. Our Gift Cards come in $12.5, $25, $50, $125 and $250 denominations. And they never expire!

Visit our Gift Card page for more details - Gift Cards.

Can I track my order after it's been placed?

Yes. Once your order has shipped, you will be emailed the tracking information. Additionally, we will email you a delivery confirmation email once your order shows that it has been delivered.

What should I do if I receive a damaged item?

If your shipment is damaged, please reach out to our Customer Support team at 888-181-9012 or email us at [email protected]. You may also contact us here - Contact Us.