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Description
K&N Panel Filter 33-2278K&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10 Year Million Mile Limited Warranty. K&N drop in replacement filters are designed to install easily into your
K&N® washable, reusable High-Flow Air Filters™ feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower.
Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10-Year/Million Mile Limited Warranty.
K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!
Specifications:
- Air Filter Shape: Panel
- Filter Material: Cotton Gauze
- Washable: Yes
- Height: 25 mm
- Outside Length: 321 mm
- Outside Width: 175 mm
- Package Contents: 1 Air Filter
- Package Quantity: 1
- Warranty: 1,000,000 Miles/10 Year
- Product Style: Panel Air Filter
- Weight: 0.4 kg
- Filter Re-Oiling Amount: 34 ml
- Product Box Height: 44 mm
- Product Box Length: 345 mm
- Product Box Width: 196 mm
Vehicle applications:
| Make | Model | Engine | Year | Specific |
|---|---|---|---|---|
| FAW | Pentium B50 | 1.6L L4 Gas | 2009-2009 | |
| FAW | Pentium B70 | 2.0L L4 Gas | 2006-2006 | |
| FAW | Pentium B70 | 2.3L L4 Gas | 2006-2006 | |
| Mazda | 6 | 1.8L L4 Gas | 2002-2012 | |
| Mazda | 6 | 2.0L L4 Diesel | 2002-2009 | |
| Mazda | 6 | 2.0L L4 Gas | 2002-2012 | |
| Mazda | 6 | 2.2L L4 Diesel | 2009-2010 | |
| Mazda | 6 | 2.3L L4 Gas | 2007-2008 | US Models Only |
| Mazda | 6 | 2.3L L4 Gas | 2002-2006 | |
| Mazda | 6 | 2.5L L4 Gas | 2009-2010 | Non-US Models |
| Mazda | 6 | 2.5L L4 Gas | 2007-2008 | |
| Mazda | Atenza | 2.0L L4 Gas | 2002-2011 | |
| Mazda | Atenza | 2.3L L4 Gas | 2008-2011 | |
| Mazda | Atenza | 2.3L L4 Gas | 2005-2007 | Except Turbo |
| Mazda | Atenza | 2.3L L4 Gas | 2002-2004 | |
| Mazda | Atenza | 2.5L L4 Gas | 2012-2012 | Australia |
| Mazda | Atenza | 2.5L L4 Gas | 2008-2011 | |
| Mazda | MPV | 2.0L L4 Diesel | 2002-2006 | China |
| Mazda | MPV | 2.3L L4 Gas | 2002-2006 | |
| Mazda | MPV | 3.0L V6 Gas | 2002-2006 | China |
| Mazda-Faw | 6 | 2.0L L4 Gas | 2003-2003 | |
| Mazda-Faw | 6 | 2.3L L4 Gas | 2003-2003 | |
| Mazda-Faw | Ruiyi | 2.0L L4 Gas | 2009-2009 | |
| Mazda-Faw | Ruiyi | 2.5L L4 Gas | 2009-2009 |
Cross references:
- AC Delco A2050C
- BMC FB38304
- Champ Labs. AF7953
- Fram CA8922
- Luber-Finer AF7953
- Mann-Hummel C3233
- Mazda RF4F13Z40
- Mazda RF4F13Z409A
- Mazda RF4R13Z40
- Mazda RF4RF13Z40
- Mazda RF7F13Z40
- Mazda RFZA13Z40A9U
- MicroGard MGA42825
- MicroGard MGA49114
- Mobil MA5370
- Premium Guard PA5370
- Purepro A5370
- Purolator A35370
- Ryco A1429
- Service Champ AF5370
- Simota OMA001
- STP SA8922
- Valvoline VA190
- Warner WAF7953
- Wesfil WA1061
- WIX 42825
- WIX 49114
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
Good product
Model: 36 SqFt(3.4 SqM)
Easy to roll out. Works great
Why did you pick this product vs others?:
Fair price for the amount of coverage, good quality
Works well:
Easy to install, rolls out great. Forms to contours well
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 13, 2025
★★★★★ 5
Great product
Model: 36 SqFt(3.4 SqM)
I used this on the doors of a Toyota Tacoma, worked as it described. Reduced the road noise significantly.. Need to buy another box for the floor and roof of the truck..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
★★★★★ 5
Great product - Add foam product for complete solution
Model: 36 SqFt(3.4 SqM)
Used in two cars with speaker upgrades. Easy to install but get the roller for assured adhesion.removes "tinnyness" from large metal resonators. Use with foam absorptive material for a complete system.
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Reviewed in the United States on April 14, 2026
★★★★★ 5
Great Product for noise reduction in Auto Use.
Model: 36 SqFt(3.4 SqM)
I use this on many builds to dampen the metal echo in cars, vans, and trucks. Just one sheet in the center of a body panel is a huge difference maker. You can also cover the entire surface and get added insulation value. The noise is greatly depleted and it's easy to install with a roller tool. Looks Great when done. Good Product I will use again!
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Reviewed in the United States on December 29, 2025
★★★★★ 5
Great sound mat for the price!
Style: 50 mil 50 SqFt, Style: 50 mil 50 SqFt
This is a good product. Many people go with KILMAT because of the value to price point. I did as well. When you clean the surface (in my case it was all painted metal) this stuff sticks very well. I do recommend you use a seam roller of some type, I used Lumiteco 3 piece roller set. This will help with adhesion and mostly flatten the overlapped edges. It also helps you see where you have rolled as it leaves little grooves. The difference when we had no sound mats and after was very impressive. We haven't finished our install yet and it is quieter than when we had an interior in the van. There are thicker mats available in other brands, but this will work great for our van build, but this helps keep the weight down. It is quality material, just be careful when you are removing the backing, the edge of the foil face can cut you. I suggest you layout where you are installing the mat and cut to fit. From what I have read, you don't need to cover every inch in the vehicle, just spot install for a big difference. I chose to cover most surfaces to help keep sound out when we are sleeping in the van. We haven't finished putting the van yet, but we have driven it around and been very satisfied with this product.
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Reviewed in the United States on December 3, 2025