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33-2997
$53.99 USD
MSRP $84.49 36.1% Off
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K&N 33-2997 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.6 out of 5 stars   8 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 33-2997 Air Filter fits some BMW 235i, BMW 335i, BMW 335i GT, BMW 335i GT xDrive, BMW 335i xDrive, BMW 435i, BMW 435i Gran Coupe, BMW 435i xDrive, BMW 435i xDrive Gran Coupe, BMW ActiveHybrid 3, BMW i8, BMW M135i, BMW M2, BMW M235i, and BMW M235i xDrive 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
Height1.25 in (32 mm)
Outside Length10.5 in (267 mm)
Outside Width8.563 in (217 mm)
Package Contents1 Air Filter
Package Quantity1
Warranty1,000,000 Miles/10 Year
Product StylePanel Air Filter
Weight1.3 lb (0.6 kg)
Filter Re-Oiling Amount1.37 oz (40 ml)
Product Box Height11.56 in (294 mm)
Product Box Length10.44 in (265 mm)
Product Box Width1.75 in (44 mm)

K&N 33-2997 Air Filter Product Reviews

Sunday, March 18, 2018 - Part 33-2997
I did not notice any difference in induction noise and the way the car drives feels exactly the same. The materials the filter is made from feels like it’s high quality.

James Anderson
Livingston, United Kingdom
Wednesday, January 20, 2016 - Part 33-2997
All K&N products are great, this one is no exception. My first experience was the purchase of a 369 series typhoon for my 09 Nissan 370z.

Gus Galatas
Bakersfield, California
Tuesday, December 22, 2015 - Part 33-2997
Replaced my stock air filter on my 16 M235i. :- ) Very pleased in the difference in sound, power.

Stephen Hardiman
Lompoc, California