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SKU: 33-2154 | UPC: 024844078391
K&N 05 WRX / 99-06 Impreza / 99-04 Legacy Drop In Air Filter
K&N 33-2154 is a washable reusable high-flow replacement air filter with layered oiled cotton media that improves airflow while capturing contaminants for more horsepower. This drop-in filter fits directly into factory air boxes on 1999-2006 Subaru Impreza models including 2005 WRX, 1999-2004 Legacy, plus Forester, Outback, and Baja variants. Engineered for long life it lasts the vehicle's lifespan backed by K&N No-Hassle Lifetime Limited Warranty.
Key Features
- 4 Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form a mesh that blocks and traps harmful contaminants from reaching the engine.
- Clean Once Every 5 Years: Needs cleaning every 75000 miles under normal highway driving or 5 years at 15000 miles per year average.
- Easy Installation: Pre-oiled and ready to drop into factory air box for quick performance gains with no modifications.
- Engineered Power: State-of-the-art media increases horsepower acceleration and overall engine performance.
- Reusable Saves Money: Washable design saves up to $125 over 200000 miles versus multiple disposable filters based on OE MSRP.
Product Notes
- Filter measures 9.5 in L x 7.5 in W x 1.625 in H weighs 0.85 lbs.
- Wash with K&N cleaning kit every 75000 miles do not use soap or harsh cleaners.
- Ships in protective box 10.25 x 7.75 x 1.75 inches.
Installation Notes
- Professional installation recommended.
- Remove factory filter drop in K&N 33-2154 no tools required in most cases.
- Compatible with OEM air box hardware no additional parts needed.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2004 | Subaru | Impreza | RS |
| 2002-2004 | Subaru | Impreza | TS |
| 1999-2001 | Subaru | Impreza | L |
| 1999-2006 | Subaru | Impreza | WRX |
| 1999-2000 | Subaru | Legacy | Brighton |
| 1996-2004 | Subaru | Legacy | GT |
| 1998 | Subaru | Legacy | GT Limited |
| 2000-2002 | Subaru | Legacy | GT Limited |
| 1999-2004 | Subaru | Legacy | L |
| 1999 | Subaru | Legacy | L 30th Anniversary |
| 2003 | Subaru | Legacy | L SE |
| 1999 | Subaru | Legacy | Limited 30th Anniversary |
| 1996-1997 | Subaru | Legacy | LSi |
| 1996-1999 | Subaru | Legacy | Outback |
| 1997 | Subaru | Legacy | Outback Limited |
| 1999 | Subaru | Legacy | Outback Limited |
| 1999 | Subaru | Legacy | SUS 30th Anniversary |
| 2000-2004 | Subaru | Outback | Limited |
| 2003 | Subaru | Baja | Base |
| 2003-2006 | Subaru | Baja | Sport |
| 1999-2002 | Subaru | Forester | Base |
| 1999-2002 | Subaru | Forester | L |
| 1999-2002 | Subaru | Forester | S |
| 2003-2004 | Subaru | Forester | X |
| 2003-2004 | Subaru | Forester | XS |
Why Choose K&N?
- Over 50 years designing high-flow air filters for automotive performance.
- Reusable filters cut replacement costs and landfill waste versus disposables.
- Precision engineering with oiled cotton gauze for airflow and filtration balance.
Frequently Asked Questions
-
Q: Does this fit 2005 Subaru Impreza WRX?
A: Yes K&N 33-2154 is direct drop-in replacement for 2005 WRX factory air box. -
Q: What material is used in this filter?
A: Layered premium cotton gauze treated with oil and tacking agent for high airflow and dirt trapping. -
Q: What is the warranty coverage?
A: No-Hassle Lifetime Limited Warranty covers defects in materials or workmanship limitations apply see K&N site.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective cardboard box 10.25 x 7.75 x 1.75 inches
- Weight: 0.85 lbs
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