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SKU: 33-2304 | UPC: 024844111562
K&N 33-2304 Replacement Air Filter for 05-08 Legacy GT / 08-11 WRX / STI Subaru Models
K&N 33-2304 washable reusable high-flow air filter uses layered oiled cotton media to improve airflow and trap contaminants for horsepower gains. Direct drop-in replacement installs into factory airbox on select 2005-2021 Subaru Legacy WRX STI Outback Forester Impreza Tribeca models. Backed by K&N No-Hassle Lifetime Limited Warranty for vehicle lifespan durability.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form mesh to block and trap dirt dust pollen contaminants.
- Clean Every 5 Years: Service only every 75000 miles under normal highway conditions based on 15000 miles per year average.
- Easy Installation: Pre-oiled ready to drop into OEM airbox for fast cost-effective power gains no tools required.
- Engineered Power: High-flow media boosts horsepower acceleration overall engine response.
- Reusable Saves Money: Washable design saves up to $125 over 200000 miles vs disposable OEM filters MSRP.
Product Notes
- Pre-oiled for immediate use clean with K&N cleaning kit for reuse.
- Reduces landfill waste vs 200 million annual disposable filters.
- Rugged construction with premium materials lasts vehicle lifetime.
Installation Notes
- Professional installation recommended.
- Remove factory filter drop in K&N 33-2304 no airbox modifications needed.
- Compatible with stock hardware 5 minute install average.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2009 | Subaru | Outback | XT Limited |
| 2008-2009 | Subaru | Tribeca | Base |
| 2008-2014 | Subaru | Tribeca | Limited |
| 2010-2012 | Subaru | Tribeca | Premium |
| 2010-2012 | Subaru | Tribeca | Touring |
| 2015-2021 | Subaru | WRX | Base |
| 2015-2021 | Subaru | WRX | Limited |
| 2015-2021 | Subaru | WRX | Premium |
| 2005 | Subaru | Outback | i |
| 2005 | Subaru | Outback | Limited |
| 2005-2006 | Subaru | Outback | R |
| 2005-2008 | Subaru | Outback | R L.L. Bean Edition |
| 2006 | Subaru | Outback | R VDC Limited |
| 2005 | Subaru | Outback | VDC Limited |
| 2005-2006 | Subaru | Outback | XT |
| 2006-2007 | Subaru | B9 Tribeca | Base |
| 2006-2007 | Subaru | B9 Tribeca | Limited |
| 2016-2017 | Subaru | Crosstrek | Base |
| 2016-2017 | Subaru | Crosstrek | Limited |
| 2016-2017 | Subaru | Crosstrek | Premium |
| 2014-2018 | Subaru | Forester | 2.0XT Premium |
| 2009-2013 | Subaru | Forester | XT Limited |
| 2008-2011 | Subaru | Impreza | 2.5 GT |
| 2008-2011 | Subaru | Impreza | WRX |
| 2008-2011 | Subaru | Impreza | WRX STI |
| 2015-2018 | Subaru | WRX STI | Limited |
Why Choose K&N?
- Four decades of air filtration innovation for automotive performance.
- High-flow design proven on dyno for power increases across vehicles.
- Precision engineered direct OEM fit with lifetime durability.
Frequently Asked Questions
-
Q: Will K&N 33-2304 fit 2008-2011 Subaru WRX STI?
A: Yes direct drop-in replacement for factory airbox on 2008-2011 Impreza WRX STI and other listed Subaru models. -
Q: What filter media does it use?
A: Layered premium cotton gauze oiled with proprietary formula for maximum airflow and filtration. -
Q: What warranty coverage?
A: No-Hassle Lifetime Limited Warranty covers stock replacement use limitations apply.
Shipping & Handling
- Method: Standard ground
- Availability: In stock - ships same or next business day
- Packaging: Protective box 13.25 x 9.13 x 3.75 inches
- Weight: 1.1 lbs
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