★★★★★ 5
Perfect fit
Product is very good, no damage and fits well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air FilterK&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10 Year Million Mile Limited Warranty. K&N drop in replacement filters are designed to install easily into your
Quick Dispatch:
Your K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
Order Tracking:
You'll receive a tracking link by email once your K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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4.6 ★★★★★
Based on 2019 reviews
Sort
Product Reviews
★★★★★ 5
Perfect replacement
Fit perfectly saved a bunch of money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 7, 2025
★★★★★ 3
It’s ok for a short period of time.
Meh….the filter is glued at each end versus clamped into the housing like the OEM filter. Will probably get a different brand or OEM in the near future.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Good Replacement from Third Party
Perfect fit and great price. Would recommend.
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Reviewed in the United States on October 1, 2025
★★★★★ 5
Perfect fit
Fit well. Looks nearly identical to the OEM filter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 18, 2025
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