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
Hero image 0 of 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, 0 of 3
Visit the K&N Store

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)|
95 ratings
Car
Check if this fits your vehicle

Key item features

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
Price when purchased online
  • Free shipping
  • Free 30-day returns

How do you want your item?

How do you want your item?
Columbus, 43215
Arrives by Sat, Feb 28
|
Sold and shipped by K&N
4.745 stars out of 5, based on 200 seller reviews(4.7)
Report an issue with this seller
Free 30-day returns
Other sellers
$71.92
+Free shipping
Shipping, arrives by Fri, Feb 27 to Columbus, 43215
Sold and shipped by 4WheelOnline
Free 30-day returns
$73.68
+Free shipping
Shipping, arrives by Fri, Feb 27 to Columbus, 43215
Sold and shipped by Corvette Realm
Free 30-day returns

About this item

Product details

Specifications

Directions

Warranty

Warnings

Customer ratings & reviews

4.5 out of 5 stars
stars95 ratings89 reviews
How item rating is calculated
  1. 5 stars82% (78)
  2. 4 stars5% (5)
  3. 3 stars2% (2)
  4. 2 stars3% (3)
  5. 1 star7% (7)
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Sort by |

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
Helpful?3H5V94PZGF6V34814098