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33-2125
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MSRP $78.79 35.3% Off
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K&N 33-2125 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   5.0 out of 5 stars   10 Customer Reviews
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®
K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapePanel
Filter MaterialCotton Gauze
Filter Re-Oiling Amount1.32 oz (39 ml)
Height0.75 in (19 mm)
Inner WireNo
Outside Length9.875 in (251 mm)
Outside Width8.25 in (210 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height11.56 in (294 mm)
Product Box Length10.44 in (265 mm)
Product Box Width1.75 in (44 mm)
Product StylePanel Air Filter
Top StyleOpen
Weight1.1 lb (0.5 kg)

K&N 33-2125 Air Filter Product Reviews

Monday, June 13, 2016 - Part 33-2125
Fantastic! What a difference. I will buy these until I die.

David Dow
Albuquerque, New Mexico
Monday, April 25, 2016 - Part 33-2125
Order shipped in a reasonable amount of time and arrived undamaged and on time. There is not much else to say about K&N products or services; they are simply outstanding.

Bane
Santa Rosa, California
Wednesday, January 6, 2016 - Part 33-2125
On our cars (Volkswagen / Audi 1.8T Motors) Upgraded air filters wont give us any more power then we already have. It's just a fact. But if you need an air filter why not get one that you don't have to replace every time and could just clean and re use? K&N is one of the best filters out there period. I'm a real person and wasn't paid to say this. I was going to get an (brand name) but they don't have the same guarantee as K&N. It also came a lot faster then I was expecting it to.

Ira
San Diego, California
Monday, November 9, 2015 - Part 33-2125
My third K&N filter, this one for my wife's Audi allroad. She noticed the difference right away.

Paul
Lafayette, Colorado
Tuesday, July 21, 2015 - Part 33-2125
Perfect fit for my 2004 Audi A6 2.7L.

Nabiel
Brockton, Massachusetts
Wednesday, May 20, 2015 - Part 33-2125
I've purchased your product for my old 1991 Toyota 4-Runner in the past and was highly pleased. I recently started a new job and commute over 100 miles round-trip every day. I purchased the K&N air filter for my 2005 Audi Allroad and installed it with no problem. On the first road trip, my cars tank capacity calculator was going crazy It estimated that the tank of gas would go 390 miles when we first started out. By the end of the trip over 70 miles, the tank capacity calculator was reading 420 miles.Talk about impressed, I just ordered another air filter for my wife's car.

Al D.
Nashua, New Hampshire
Thursday, March 19, 2015 - Part 33-2125
Perfect fit, and easy to install on my Audi. Once again, another great product from K & N.

Daniel R Yoder
Harrisonville, Pennsylvania