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K&N 33-2945 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.9 out of 5 stars   16 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 Amount1.15 oz (34 ml)
Height1.563 in (40 mm)
Outside Length12.625 in (321 mm)
Outside Width5 in (127 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height13.56 in (345 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)
Product StylePanel Air Filter
Weight1.3 lb (0.6 kg)

K&N 33-2945 Air Filter Product Reviews

Monday, October 17, 2016 - Part 33-2945
Fit perfectly.

Mickey Robinson
Rainier, Washington
Monday, October 17, 2016 - Part 33-2945
Fit like a glove...

Andrew Eckman
West Islip, New York
Wednesday, September 14, 2016 - Part 33-2945
Filter is doing a good job with some noticable increase in power / acceration and on some small, but positive increase in gas mileage. However, the QC on the product was a little below standard with some large excess plastic / rubber on the filter top where it seals with the top of the air filter housing. Appears not to be a problem, but y'all should notice these things in production as a mold or something is our of line.

David Hoffman
Fort Worth, Texas
Thursday, September 1, 2016 - Part 33-2945
Shipping was fast. Installation was easy. I have always used K&N in my vehicles as they are high quality products.

Ryan Jenkins
Scottsdale, Arizona
Monday, July 11, 2016 - Part 33-2945
If you use your allroad in dusty conditions, get yourself a K&N.

Benjamin Binder
South Pasadena, California
Friday, July 1, 2016 - Part 33-2945
I saw an immediate improvement to both the performance and fuel economy. Neither were startling but both were noticeable.

Chris Pluch
Toronto, Canada
Sunday, June 19, 2016 - Part 33-2945
This is by far the best airfilter for an Audi A4. Had it since the first delivery of the car and it is a fantastic filter. Not only filters but it makes the engine run smoother and the mileage per liter improves dramatically. An excelent filter.

Vance H. Nooitrust
Amsterdam, The Netherlands