K&N Engineering
KNN33-2075
K&N Engineering

K&N 04-07 Subaru STi K&N Drop In Air Filter

$57.99

Description

Enhance your Subaru STI’s performance with the K&N drop-in air filter designed to boost horsepower and improve airflow. This high-flow air filter for the Subaru STI is crafted with layered, oiled cotton media that not only increases performance but is also washable and reusable, ensuring lasting quality backed by K&N’s 10-Year/Million Mile Limited Warranty.

Key Benefits

• Improved airflow for better engine efficiency
• Increased horsepower and quicker acceleration
• Washable and reusable design for long-term savings
• Supported by a solid 10-Year/Million Mile Limited Warranty

Easy Installation & Compatibility

This K&N air filter for the Subaru STI is designed as a perfect drop-in replacement for your factory air box. Its straightforward installation makes it ideal whether you’re an experienced enthusiast or just getting started with vehicle upgrades. Specifically engineered for Subaru fans, it fits models such as:
• 2004 Subaru Impreza WRX STI

For additional technical details, please refer to our Technical Bulletin.

Upgrade your ride and feel the difference—buy the K&N drop-in air filter today and experience the superior performance every Subaru STI owner deserves. For more premium air filter options, visit our Air Filters - Drop In collection.

Enhance your Subaru STI’s performance with the K&N drop-in air filter designed to boost horsepower and improve airflow. This high-flow air filter for the Subaru STI is crafted with layered, oiled cotton media that not only increases performance but is also washable and reusable, ensuring lasting quality backed by K&N’s 10-Year/Million Mile Limited Warranty.

Key Benefits

• Improved airflow for better engine efficiency
• Increased horsepower and quicker acceleration
• Washable and reusable design for long-term savings
• Supported by a solid 10-Year/Million Mile Limited Warranty

Easy Installation & Compatibility

This K&N air filter for the Subaru STI is designed as a perfect drop-in replacement for your factory air box. Its straightforward installation makes it ideal whether you’re an experienced enthusiast or just getting started with vehicle upgrades. Specifically engineered for Subaru fans, it fits models such as:
• 2004 Subaru Impreza WRX STI

For additional technical details, please refer to our Technical Bulletin.

Upgrade your ride and feel the difference—buy the K&N drop-in air filter today and experience the superior performance every Subaru STI owner deserves. For more premium air filter options, visit 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.