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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   4.9 out of 5 stars   7 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
Filter Re-Oiling Amount1.37 oz (40 ml)
Height1.25 in (32 mm)
Outside Length10.5 in (267 mm)
Outside Width8.563 in (217 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
Weight1.3 lb (0.6 kg)

K&N 33-2997 Air Filter Product Reviews

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
Thursday, December 3, 2015 - Part 33-2997
Very good product, noticeable gains, & a little bit more induction noise. Really Pleased Ben Bayliss

Ben Bayliss
Swanely, Kent
Thursday, September 17, 2015 - Part 33-2997
Quality product. I use K&N air filters in all 3 of our cars. I've been very satisfied.

Tucson, Arizona
Wednesday, January 28, 2015 - Part 33-2997
Just what the doctor ordered . Thanks

John Ruffino
Naples, Florida
Friday, November 7, 2014 - Part 33-2997
Excellent product, been a KN user for many years and they have superior product line for almost every make and model

Kerem Yogurtcugil
Long Beach, California
Monday, February 24, 2014 - Part 33-2997
Great Product. Has made a noticeable difference in performance!

Pratik Patel
Orlando Florida