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K&N

K&N High-Flow Original Lifetime Engine Air Filter: Increase Power & Acceleration, Washable, Premium: Compatible with 2003-2019 Subaru (Forester, Legacy, Outback, Impreza, WRX, Crosstrek), 33-2304

    • Based on 2,186 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, May 8
Order within 2 hours and 20 minutes
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Features

  • CLEAN ONCE EVERY 5 YEARS: Engine air filter only needs cleaning every 75,000 miles under normal highway driving conditions (based on the average miles driven per year of 15,000 miles)
  • BUILT TO LAST: K&N Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime
  • EASY INSTALLATION: Pre-oiled 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.
  • ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance
  • ECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A K&N filter will last longer than 10 disposable filters.

Description

performance High-Flow Air Filters are engineered to improve engine performance by increasing airflow up to 50%. Unlike disposable paper filters which must be frequently replaced, K&N Air Filters are washable, reusable, and engineered to last for the life of your vehicle. K&N air filters are backed by our famous 10-Year/Million Mile Limited Warranty, and they provide an environmentally friendly way to reduce landfill waste by avoiding disposable filters. Engineered to fit easily into your factory air box, installation can be completed in a matter of minutes! K&N develops and tests each product on the world’s toughest race tracks, so we can bring the highest level of performance to your daily driving. Join the millions of customers who have saved money and improved vehicle performance by upgrading to K&N filtration.Compatible Vehicles:2011-2021 RAM 1 RAM 1500 Classic2012-2019 DODGE 15002019 DODGE 1500 Classic2012-2018 DODGE 2 DODGE 3 RAM 2 RAM 3 DODGE 4 DODGE 5 RAM 4 RAM 5 RAM Ram2002-2010 DODGE Ram 1 DODGE Ram 2 DODGE Ram 3500

Brand: K&N


Product Dimensions: 4.53"L x 4.09"W x 0.67"H


OEM Part Number: 16546AA090, 16546AA10, 16546AA10A, 16546AA120, 16546AA12A, 16546AA90, 46051FG000


Global Trade Identification Number: 62


Shape: Rectangular


Brand: ‎K&N


Product Dimensions: ‎4.53"L x 4.09"W x 0.67"H


OEM Part Number: ‎16546AA090, 16546AA10, 16546AA10A, 16546AA120, 16546AA12A, 16546AA90, 46051FG000


Global Trade Identification Number: ‎62


Shape: ‎Rectangular


Manufacturer: ‎K&N


UPC: ‎024844111562


Model: ‎33-2304


Item Weight: ‎14.1 ounces


Country of Origin: ‎USA


Item model number: ‎33-2304


Is Discontinued By Manufacturer: ‎No


Exterior: ‎Other


Manufacturer Part Number: ‎33-2304


Date First Available: February 13, 2005


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, May 8

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • 2016 Subaru WRX approved
Style: Cotton Oil
Perfect, easy replacement for the restrictive stock paper filter on a 2016 Subaru WRX. Start to finish, installation took about two minutes with no tools required -- and this is my first time replacing an engine filter. The filter housing has two clamps that pop right off, and then the housing will open just far enough to replace the filter. After about 13 months / 18k miles, the stock filter was dirty and clogged with leaves, dirt, and bugs. I noticed an instance difference after installing this K&N filter. I can't vouch for a specific improvement in HP or fuel consumption yet, but it definitely feels like the engine has more pep. With the stock filter, switching into second gear at low revs had a sort of hiccup in power delivery, no matter how I engaged the clutch. With the K&N filter installed, that hiccup is gone! The power band feels consistent and slightly more powerful. Couldn't be happier with the purchase. Don't pay a dealer to do replace your engine filter! They will charge anywhere from $70-$100 for a $15 paper filter that will only last a year or two. YouTube has plenty of helpful videos about how to install a filter on your make and model, and you'll be happy to have a higher quality, reusable filter. ... show more
Reviewed in the United States on February 14, 2017 by Danny Jacobs
    • Fantastic
Style: Cotton Oil
Great filter. Works extremely well. I purchased it for my aging Subaru Forester and it has given the car new life. Lots of air coming in and plenty of filtration. I would not hesitate to buy one of these for every car I own.
Reviewed in the United States on January 24, 2024 by Ambrose
    • This filter really rocks!!
Style: Cotton Oil
I bought the K&N air filter for my 2016 Subaru Outback with 2.5i engine and installed it on 7-21-2016. It fits perfectly- as mentioned by others the only way it fits in this car's air box is to turn the filter 90 degrees so the filter slats are running vertically, not horizontally as it does on the OEM filter. The filter looks square but is not a perfect square. Build quality is much better and more solid than the flimsy OEM or aftermarket paper air filters. The deep side of the filter (air input) faces the front of the car which I installed into the front portion of the air box. I noticed right away that throttle response was better and much more immediate, and the engine sounds and runs more smoothly. After 2 weeks of having it installed acceleration and power have really improved. The lackluster acceleration was a drawback I've had with this car in exchange for good fuel economy, but I love everything else about it. After having had the K&N filter installed for 2 weeks acceleration has really improved to where I am very impressed and am having even more fun driving it. This is my fifth Subaru with the 2.5i engine. I was thinking my next Subaru would be with the 6 cylinder but no longer, thanks to this air filter. Apparently the engine computer system needs time to adjust to the increased air flow. This is not imagined on my part, power and speed have considerably improved, as well as smoother acceleration. Feels like power has increased by several horsepower. The car also idles at a lower RPM. I have not yet determined any increase in fuel economy- I've been having too much fun driving this car faster and harder than before. This filter really does great things for my car's performance! Don't hesitate to try it. ... show more
Reviewed in the United States on August 3, 2016 by GARY55
    • K&N quality
Style: Cotton Oil
Perfect fit for my 2010 Subaru Impreza. Noticeably increase in performance
Reviewed in the United States on January 31, 2025 by Winston Blackman
    • It's a k&n. It's good enough for a title
Style: Cotton Oil
Easy to use. Easy to clean, easy to reuse. In some cases there is a noticeable bit of power difference because of the air to fuel ratio. In some cases you might not notice it. It's not a huge jump in power but it can be noticeable in the right vehicle. I put them in everything. I got one in my outback. I had one in my RX. I had one in my Sequoia had one in my fusion. Every vehicle I've had I've put one in. I have not put one in my lx470 yet because it's going to need much more work than an air filter can do right now. So I haven't put that expense into it. But I will because I know how it performed in the Sequoia with the same engine. It was a noticeable difference and when you're at about 6,000 7,000 lb of weight, a noticeable difference can be significant matter how small of a difference it is that it's noticeable ... show more
Reviewed in the United States on September 16, 2024 by JON

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