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33-2125
$54.99 USD
MSRP $85.19 35.5% 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   18 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®
The K&N 33-2125 Air Filter fits some Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi Allroad I, Audi Allroad Quattro, Audi RS4, Audi S4, Audi S6, Skoda Superb, and Volkswagen Passat models. See vehicle applications link for details.
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
WashableYes
Height0.75 in (19 mm)
Outside Length9.875 in (251 mm)
Outside Width8.25 in (210 mm)
Package Contents1 Air Filter
Package Quantity1
Warranty1,000,000 Miles/10 Year
Product StylePanel Air Filter
Top StyleOpen
Weight1.1 lb (0.5 kg)
Filter Re-Oiling Amount1.32 oz (39 ml)
Product Box Height11.56 in (294 mm)
Product Box Length10.44 in (265 mm)
Product Box Width1.75 in (44 mm)
Inner WireNo

K&N 33-2125 Air Filter Product Reviews

Thursday, August 9, 2018 - Part 33-2125
Fit perfectly in my 05 Passat TDI, throttle seemed a little more responsive as well. Well worth the money as opposed to disposable filters.

Kevin Logan
Crossfield, Canada
Monday, April 16, 2018 - Part 33-2125
Always the first thing I do to any car that I plan on keeping. Easy install with notable gains in acceleration and fuel economy. Not to mention never needing to buy another air filer again.

Heath Fair
Hellertown, Pennsylvania
Monday, August 28, 2017 - Part 33-2125
Fantastic product, great price and does exactly what it's supposed to. That simple.

Thomas Pluister
Charlevoix, Michigan