Click to zoom in
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
Air Filters
Shop automotive air filters and performance intake filters at Black Ops Auto Works for direct-fit air filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, engine breather filters, HVAC filters, pre-filters, velocity stacks and intake filter accessories for cars, trucks, SUVs, Jeeps, muscle cars, diesel trucks, import performance builds and custom intake setups. This Air Filters collection is built for enthusiasts who want cleaner airflow, better filtration, improved engine protection, reusable performance filter options, replacement intake filters and vehicle-specific air filter fitment. Browse air filters for Dodge Charger, Dodge Challenger, Dodge Durango, Jeep Grand Cherokee, Jeep Grand Cherokee Trackhawk, Ram TRX, Chevrolet Camaro, Chevrolet Corvette, Cadillac CT5, Ford Mustang, Ford F-150, Toyota Tacoma, Toyota Tundra, BMW, Honda, Infiniti, Nissan, Porsche and other performance platforms. Shop Automotive Air Filters by Category Find the right air ...
View Air Filters Products
Air Filters - Drop In
Shop drop-in air filters and replacement performance filters at Black Ops Auto Works for direct replacement panel filters, high-flow air filters, reusable air filters, DryFlow filters, oiled filters, foam panel filters, intake replacement filters and vehicle-specific air filter upgrades for cars, trucks, SUVs, Jeeps, diesel vehicles, imports, muscle cars and custom performance builds. This Drop-In Air Filters collection is built for enthusiasts who want a simple air-filter replacement without changing the entire intake system. Drop-in filters are designed to fit factory air boxes or compatible aftermarket intake boxes while supporting cleaner airflow, dependable filtration, easier service and performance-focused maintenance. Shop Drop-In Air Filters by Category Find the right air filter style using related Black Ops Auto Works categories. Shop automotive air filters, direct-fit air filters, universal fit air filters, air filter pre-filters, HVAC and cabin filters, air intake systems...
View Air Filters - Drop In Products
K&N Engineering
Shop K&N Engineering cold air intakes, reusable air filters, oil filters, cabin filters, fuel filters and performance filtration upgrades at Black Ops Auto Works for cars, trucks, SUVs, diesel builds, off-road vehicles, muscle cars, Jeeps, Mopar platforms and custom performance applications. K&N Engineering is one of the most recognized names in automotive filtration and airflow technology. This collection includes K&N cold air intake systems, high-flow replacement air filters, universal clamp-on air filters, drop-in filters, oil filters, cabin air filters, fuel filters, Dryflow filters, filter cleaning kits, intake adapters, air intake accessories and performance filtration parts for street, towing, off-road, diesel and high-performance builds. Shop K&N Engineering Products by Category Find the right K&N performance filtration upgrade using related Black Ops Auto Works categories. Shop cold air intakes, air intake systems, air intake components, automotive air f...
View K&N Engineering ProductsLet customers speak for us
Looks pretty nice
Looks pretty nice, pricing was good and the reinforcement is a big plus.
Randy H.
Black Ops Auto Works
I emailed customer service to inquire about when it would be shipped
I emailed customer service to inquire about when it would be shipped. They checked and emailed me with the answer. Customer service is A1
Ralph J.
Black Ops Auto Works
Installation was easy
Installation was easy. The price is good and it looks great on the truck.
Ralph J.
RHO Small Grille Badge
Looks as good as it fits
Looks as good as it fits,
zachary d.
Seibon 70-73 Datsun 240Z OE Carbon Fiber Hood
Nothing like it
I love it great sound and response
Luis P.
Legmaker Dodge Durango HEMI Short Ram CAI 2011-Present 5.7L
Car totally diferent with the whole kit
Car totally diferent with the whole kit. Ive stood next to wide bodies and my car gets more attention at times . Ive bought the kit twice already.
Ding D.
2015-2023 Dodge Charger Carbon Fiber Wind Splitters
Fantastic emblem! Exactly what I was looking for
Fantastic emblem! Exactly what I was looking for. Great quality emblem.
Jacobus S.
Direct Connection Black Metallic Fender Badge
Worked great for my aftermarket hood on my Chrysler 2023 300C
Worked great for my aftermarket hood on my Chrysler 2023 300C. Thanks
Robert G.
Windshield Washer Squirter Relocation Kit Universal
Easy to install and makes car sound even better
Easy to install and makes car sound even better love the winn
Tracy H.
Legmaker Challenger/Charger Hellcat Demon & Redeye Air Intake
Awesome customer support
Awesome customer support. Had multiple issues with fedex and these guys were excellent in helping me sort everything out. The drop springs are great too! I highly recommend
Anonymous
Swift Spec-R Lowering springs Jeep Grand Cherokee 2011-2021
100/100! perfect CF crafted cold air intake for 6
100/100! perfect CF crafted cold air intake for 6.4 jeep .. even makes my AWE exhaust sound even deeper and you cam here this thing sucking when accelerating even at normal speeds🥶
srt.boizzz
Legmaker 392 TH Short Ram Jeep Grand Cherokee SRT 2012-2021
