K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: 2003-2019 Subaru H4/H6 1.5/2.0/2.5/3.6L (Forester, Legacy, Outback, Impreza, WRX, Levorg, Crosstrek, Tribeca), 33-2304
K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: 2003-2019 Subaru H4/H6 1.5/2.0/2.5/3.6L (Forester, Legacy, Outback, Impreza, WRX, Levorg, Crosstrek, Tribeca), 33-2304
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K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: 2003-2019 Subaru H4/H6 1.5/2.0/2.5/3.6L (Forester, Legacy, Outback, Impreza, WRX, Levorg, Crosstrek, Tribeca), 33-2304

4.5 stars out of 95 reviews
(4.5)|
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K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: 2003-2019 Subaru H4/H6 1.5/2.0/2.5/3.6L (Forester, Legacy, Outback, Impreza, WRX, Levorg, Crosstrek, Tribeca), 33-2304



  • ULTIMATE LONGEVITY: 10-Year/Million Mile Limited Warranty protects for the life of your vehicle.
  • ENGINEERED POWER: State-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%.
  • EASY INSTALLATION: Pre-treated and ready to drop into your factory air box. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains.
  • SAVES MONEY: K&N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters.
  • ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A K&N filter will last longer than 10 disposable filters.
  • WORLD CLASS PROTECTION: Pushing the limits of engine protection by protecting your engine from harmful contaminants.
  • LOW-MAINTENANCE DESIGN: 50,000 miles before your first cleaning under normal highway driving conditions.
  • HIGH QUALITY:
  • RACE TESTED: The Official Air Filter of NASCAR. Trusted on the racetrack—made for your vehicle.
Current price is $56.99
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  • Free 30-day returns

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Columbus, 43215
Arrives by Sat, Feb 28
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4.745 stars out of 5, based on 200 seller reviews(4.7)
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4.5 out of 5 stars
stars95 ratings89 reviews
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Showing 1-3 of 89 reviews

Dec 8, 2025
Gary
Sold byK&NDelivered byWalmart
5 out of 5 stars review

Verified Purchase

This is worth every penny. I would recommend this for any car. The horsepower increase is quite noticeable as well.

Incentivized Review
Helpful?3H5V94PZGF6V34814098
Jul 20, 2022
DJ
5 out of 5 stars review

Seller Verified Purchase

Super Easy

Don't listen to my previous review. Filter fit right in once realizing the pleats don't face the same way as the OEM filter. Grabbed some food and rotated the filter 90 degrees and wham, blam chicken & spam, she fit right in. Don't recommend changing on an empty stomach.

Review from K and N Filters
Helpful?3H5V94PZGF6V34814098
Apr 1, 2025
Subi Sue
5 out of 5 stars review

Great Addition to Upgrades

My son and I could tell the increase in the engines throttle response, and an increase in power. It is not huge as one would expect with just an air filter change from OEM, but it does have a noticeable improvement in power. I'm guessing but I estimate maybe 5 Hp increase.

Review from K and N Filters
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