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K&N 33-3028 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   13 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 33-3028 Air Filter fits some BMW 330D, BMW 330d GT, BMW 335d, BMW 335d GT, BMW 430d, BMW 435d, BMW 530d, BMW 530d GT, BMW 535d, BMW 535d GT, BMW 535d xDrive, BMW 640d, BMW 640d Grand Coupe, BMW 730d, BMW 740d, BMW 740Ld xDrive, BMW 750d, BMW M550d, BMW X3 xDrive 30d, BMW X3 xDrive 35d, BMW X4, BMW X5, BMW X5 M50d, BMW X5 xDrive30d, BMW X5 xDrive35d, BMW X5 xDrive40d, BMW X6 M50d, BMW X6 xDrive 30d, and BMW X6 xDrive 40d 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 Amount1.87 oz (55 ml)
Height2.688 in (68 mm)
Outside Length14 in (356 mm)
Outside Width5.813 in (148 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height14.5 in (368 mm)
Product Box Length6.31 in (160 mm)
Product Box Width6.31 in (160 mm)
Product StylePanel Air Filter
Weight2.7 lb (1.2 kg)

K&N 33-3028 Air Filter Product Reviews

Thursday, November 24, 2016 - Part 33-3028
Your air filters I used 6 years already in different cars. Better performance of the engines, but the goal is that it's necessary to change filter and environmental reason is very important. Recommendation to everybody.

Peter Handlovský
Wednesday, November 16, 2016 - Part 33-3028
It's awesome. It's like giving new life to your Diesel engine. It breathes very well and long, unlike short breaths with the stock filter. Can't wait until K&N releases a full air intake for the BMW 535 diesel.

Mike Gilic
Irvine, California
Tuesday, October 18, 2016 - Part 33-3028
Excellent product. I'm completely non-technical,and even I was able to fit it to my car in a few minutes. Product arrived with me within 36 hours of ordering. Excellent service. Thank you.

Nicholas Hodkinson
Kingswinford, United Kingdom
Thursday, August 18, 2016 - Part 33-3028
This filter makes a noticeable difference to the car's engine response (BMW 640d M Sport) - I previously fitted a K&N replacement to a 635d M Sport, 320d M Sport , an X1 2.0d x-drive & a Ford Fiesta 1.25 : same effect - seems to produce a smoother engine response. Easy to fit (this particular unit isn't 'exactly' the same as the OEM Filter - it has a hard casing & forms an integral part of the top of the filter housing, but the K&N unit fits easily & is well sealed / 'weather proof. They are easy to clean also - with the correct products - from K&N (a bit messy, but easy) Great delivery service from K&N. As you can gather, I'm a convert.... I'll change any car filter to K&N if / when they have it available for my car model (had to wait a few years for the 640d) Excellent product.

Stuart Hendry
Ayr, United Kingdom
Wednesday, June 8, 2016 - Part 33-3028
Good product. Easy to install and good experience thus far.

Andy Hamilton
Yorkshire, United Kingdom
Tuesday, April 19, 2016 - Part 33-3028
Great product! Car felt better straight away, had more pulling power and engine just sounded better. Easy fit and a great affordable mod for your car.

Matty crowder
Leeds, United Kingdom
Thursday, April 14, 2016 - Part 33-3028
I have used K&N filters for years. I use them on my 911 and on my BMW E61 535D. You made me wait for the new air filter for the BMW F11 535d , but worth the wait. Easy to clean and re oil as I live near the beach and plenty of blowing sand. I have only one problem, the insurance companies (perhaps you should leave the name off) they do not need much of an excuse not to pay out.

R A Jones
Carmarthen, United Kingdom