--- product_id: 2942106 title: "High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium, Washable: Compatible with 2003-2021 Subaru: (See Product Description for Select Models) 33-2304" brand: "k&n" price: "€ 164.06" currency: EUR in_stock: true reviews_count: 13 url: https://www.desertcart.at/products/2942106-high-flow-original-lifetime-engine-air-filter-increase-power-premium store_origin: AT region: Austria --- # 50% airflow boost Lifetime washable filter Made in USA quality High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium, Washable: Compatible with 2003-2021 Subaru: (See Product Description for Select Models) 33-2304 **Brand:** k&n **Price:** € 164.06 **Availability:** ✅ In Stock ## Summary > 💨 Power up your Subaru with the ultimate lifetime air filter upgrade! ## Quick Answers - **What is this?** High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium, Washable: Compatible with 2003-2021 Subaru: (See Product Description for Select Models) 33-2304 by k&n - **How much does it cost?** € 164.06 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/2942106-high-flow-original-lifetime-engine-air-filter-increase-power-premium) ## Best For - k&n enthusiasts ## Why This Product - Trusted k&n brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Upgrade:** Pre-oiled and ready to install in minutes—effortless performance gains without the hassle. - • **Trusted by Millions:** Backed by a 10-Year/Million Mile Limited Warranty and race-tested for peak reliability. - • **Unleash Engine Power:** Boost horsepower & acceleration with 50% more airflow for that edge on every drive. - • **Eco-Smart Performance:** Washable and reusable design slashes waste, making your upgrade green and guilt-free. - • **Built to Last a Lifetime:** Premium, rugged construction means no more frequent replacements—clean only every 75,000 miles. ## Overview The K&N High-Flow Original Lifetime Engine Air Filter is engineered to increase engine horsepower and acceleration by improving airflow up to 50%. Designed with four layers of premium cotton gauze, it traps harmful contaminants while being washable and reusable, requiring cleaning only every 75,000 miles. Compatible with a wide range of Subaru models from 2003 to 2021, this durable, USA-made filter offers a no-hassle lifetime warranty and easy installation, making it a smart, eco-friendly upgrade for performance-driven drivers. ## Description K&N 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: 2011-2015 LANCIA Thema 2006-2007 SUBARU B9 Tribeca 2016-2017 SUBARU Crosstrek 2008-2017 SUBARU Exiga 2008-2019 SUBARU Forester 2011-2013 SUBARU Forester Turbo 2008-2016 SUBARU Impreza 2007-2009 SUBARU Impreza II 2007-2008 SUBARU Impreza II WRX 2007-2008 SUBARU Impreza II WRX STI 2008-2008 SUBARU Impreza III 2008-2008 SUBARU Impreza III WRX STI 2008-2014 SUBARU Impreza WRX 2008-2014 SUBARU Impreza WRX STi 2005-2019 SUBARU Legacy 2005-2009 SUBARU Legacy GT 2003-2010 SUBARU Legacy III 2003-2014 SUBARU Legacy IV 2014-2019 SUBARU Levorg 2003-2021 SUBARU Liberty 2009-2014 SUBARU Liberty Exiga 2004-2019 SUBARU Outback 2003-2008 SUBARU Outback II 2009-2009 SUBARU Outback III 2005-2006 SUBARU Outback XT 2005-2014 SUBARU Tribeca 2012-2021 SUBARU WRX 2012-2018 SUBARU WRX STI 2012-2017 SUBARU XV 2013-2015 SUBARU XV Crosstrek ## Features - ENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance - RUGGED CONSTRUCTION: K&N Air Filters are manufactured with durable, premium materials and state-of-the-art construction methods to last a lifetime - 4 LAYERS OF PROTECTION: Multiple layers of premium cotton gauze treated with a specially-designed tacking agent work together to create an intricate mesh of engine filter media that is designed to block and trap harmful contaminants - 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) - ULTIMATE LONGEVITY: No-hassle limited lifetime warranty on stock replacement K&N air filters- limitations apply - EASY INSTALLATION: K&N Air Filters are pre-treated and ready to drop into your factory air box- they are one of the easiest and most cost-effective vehicle upgrades for quick performance gains - ECO-FRIENDLY: Using a washable, reusable engine air filter helps reduce replacement air filter waste- a K&N air filter is designed to last longer than 10 or more disposable filters - MADE IN USA: K&N Air Filters are proudly made in the USA for trusted quality & reliability ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B000COC0GQ | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #71,490 in Automotive (See Top 100 in Automotive) #985 in Automotive Replacement Air Filters | | Brand Name | K&N | | Customer Reviews | 4.7 4.7 out of 5 stars (2,272) 4.7 out of 5 stars | | Fit Type | Vehicle Specific Fit | | Global Trade Identification Number | 00024844111562 | | Included Components | K&N Engine Air Filter: High Performance, Premium, Washable, Replacement Filter: Compatible with 2003-2019 Subaru (Forester, Legacy, Outback, Impreza, WRX, Levorg, Crosstrek, Tribeca) 33-2304 | | Item Dimensions L X W X H | 4.53"L x 4.09"W x 0.67"H | | Item Type Name | K&N 85-9541 Gasket | | Item Weight | 0.4 kg | | Manufacturer | K&N | | Manufacturer Part Number | 33-2304 | | Manufacturer Warranty Description | No Warranty | | Model Number | 33-2304 | | Number Of Items | 1 | | Number Of Packs | 1 | | Oem Equivalent Part Number | 04861688AB-CHRYSLER,16546AA010-SUBARU,16546AA090-SUBARU,16546AA10A-SUBARU,16546AA120-SUBARU,16546AA12A-SUBARU,46051FG000-SUBARU,K04861688AB-ALFAROME/FIAT/LANCI,K04861688AB-LANCIA | | Product Grade | Replacement Part | | Shape | Rectangular | | Unit Count | 1 Count | | Upc | 024844111562 | ## Product Details - **Brand:** K&N - **Fit Type:** Vehicle Specific Fit - **Product Dimensions:** 4.53"L x 4.09"W x 0.67"H - **Product Grade:** Replacement Part ## Images ![High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium, Washable: Compatible with 2003-2021 Subaru: (See Product Description for Select Models) 33-2304 - Image 1](https://m.media-amazon.com/images/I/81aX95EH7XL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: K & N official website says this model filter fits a 2014 Subaru Outback. The seller here on Amazon says this filter does not fit it....?** A: The heading says 2003-2019 Subaru Outbacks and more. **Q: Anybody try this in a 2016 Subaru Crosstrek? Did it fit and is it worth the extra cost?** A: I have it on my '16 Crosstrek. I noticed a little better mileage, and a slight bump in HP. It's also easy to clean and I never have to replace it **Q: Is this filter run dry or oiled?** A: Hi, it uses a proprietary fine oil that is sprayed onto the substrate filter material you can clean the filter with they're cleaning spray and water allowed to dry and then reapply the oil about once every couple of years. **Q: Is this filter pre-oiled? Is it usable out of the box or needs to be oiled before installing?** A: It is pre-oiled, you just drop it in after take it out of the box, then you should inspected every 15-20000 mile to cleaned an re oiled with Original K&N cleaning/oiling kit(about$10) and last forever. ## Customer Reviews ### ⭐⭐⭐⭐⭐ It's a k&n. It's good enough for a title *by on Reviewed in the United States September 16, 2024* 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 ### ⭐⭐⭐⭐⭐ This filter really rocks!! *by on Reviewed in the United States August 3, 2016* 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. ### ⭐⭐⭐⭐⭐ 2016 Subaru WRX approved *by on Reviewed in the United States February 14, 2017* 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. ## Frequently Bought Together - K&N High-Flow Original Lifetime Engine Air Filter: Increase Power: Premium, Washable: Compatible with 2003-2021 Subaru: (See Product Description for Select Models) 33-2304 - K&N Premium Cabin Air Filter: High Performance,Washable, Clean Airflow to your Cabin: Designed For Select 2008-2019 Subaru (Levorg, XV, Forester, WRX, Crosstrek, Impreza), VF2055 , Black - K&N Air Filter Cleaning Kit: Aerosol Filter Cleaner and Oil Kit; Restores Engine Air Filter Performance; Service Kit-99-5000, Multi --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.at/products/2942106-high-flow-original-lifetime-engine-air-filter-increase-power-premium](https://www.desertcart.at/products/2942106-high-flow-original-lifetime-engine-air-filter-increase-power-premium) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-11-01*