K&N Engineering
KNN33-2154
K&N Engineering

K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter

$68.99

Description

Experience the power of the K&N drop-in air filter with an innovative, layered design that boosts airflow and horsepower. Engineered for quick, drop-in installation in factory air boxes, it functions as a K&N 05 WRX air filter, a 99-06 Impreza air filter, or a 99-04 Legacy air filter—delivering superior engine efficiency right from the start.

Key Benefits

• Improved airflow for optimal engine performance and increased horsepower
• Washable and reusable design that provides long-term cost savings and durability
• Backed by a 10-Year/Million Mile Limited Warranty for peace of mind
• Designed to reduce MAF sensor contamination with proper cleaning
• Easy installation that saves time and reduces stress during upgrades

Compatibility & Details

Compatible with select Subaru models including the 2003 WRX, 1999–2006 Impreza, and 1999–2004 Legacy variants, as well as specific Forester editions. For a complete overview, please view the Technical Bulletin.

Upgrade your performance today and experience the enhanced benefits of the genuine K&N drop-in air filter. Explore similar quality in our Air Filters – Drop In collection.

Experience the power of the K&N drop-in air filter with an innovative, layered design that boosts airflow and horsepower. Engineered for quick, drop-in installation in factory air boxes, it functions as a K&N 05 WRX air filter, a 99-06 Impreza air filter, or a 99-04 Legacy air filter—delivering superior engine efficiency right from the start.

Key Benefits

• Improved airflow for optimal engine performance and increased horsepower
• Washable and reusable design that provides long-term cost savings and durability
• Backed by a 10-Year/Million Mile Limited Warranty for peace of mind
• Designed to reduce MAF sensor contamination with proper cleaning
• Easy installation that saves time and reduces stress during upgrades

Compatibility & Details

Compatible with select Subaru models including the 2003 WRX, 1999–2006 Impreza, and 1999–2004 Legacy variants, as well as specific Forester editions. For a complete overview, please view the Technical Bulletin.

Upgrade your performance today and experience the enhanced benefits of the genuine K&N drop-in air filter. Explore similar quality in our Air Filters – Drop In 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 $25, $50, $100, $250 and $500 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 888-292-9012 or email us at info@everythingtruckparts.com. You may also contact us here - Contact Us.