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K&N 33-2177-1 Air Filter

Replacement Filters > Replacement Air Filter
  • 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 Amount1.23 oz (36 ml)
Height0.938 in (24 mm)
Outside Length12.625 in (321 mm)
Outside Width6.813 in (173 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
Weight1.1 lb (0.5 kg)

Customer Feedback

These filters kick butt. I put an air filter (not CAI, just the drop-in type) in our Mazda MPV (a van) and it actually has the Zoom-Zoom that silly Mazda tagline promoted! Nice boost of HP!

Since that one did so well, I decided to put one in my Acura RL. The car already had power, but it seemed to lack the smooth acceleration from low-end to high-end I expected when it got broken in. I removed the filter, dropped the K&N filter in, and it now has the smooth power I had expected. Not a big HP jump, but the smoothness is much improved.

Car manufacturers should use them!

Michael G
Pittsburgh, Pennsylvania
I just installed a K&N Filter on my 2002 Mazda MPV with 112,000 kms on it. I first observed that the vehicle was easier to start and I didn't have to press hard on the accelerator to reach the desired speed. My boss also installed one on his Nissan Maxima. He also noticed a huge difference in power.

There are a lot of people who say negative things about K&N Filters. I think they're the ones missing out on a very great product ever developed.

I might be going home to the Philippines this year, and I'll be measuring the OEM filters for my Isuzu Crosswind, and my parents' Mitsubishi L200 Strada Turbo Diesel and Toyota Hi-Lux. I hope that you will have drop-in filters for these vehicles.


Rex C. Hinlo
Calgary, Alberta, Canada
Outstanding Product!!!
Hello - I am very impressed with this product. I put a K &N filter in my 2004 Mazda 6s 3.0 V6 over the weekend and I noticed an immediate difference in compression and horsepower. My daily commute includes a 40 mile highway sprint and the acceleration with the new filter was noticeably more spirited than before especially at passing speeds. I'm looking forward to seeing how the K&N filter affects my fuel efficiency. So far I'm very pleased with this product and I'm going to recommend it to my friends and family.

UPDATE - This thing is wonderful! I just ordered another one for my Wife's Mazda MPV minivan. Her vehicle has less horsepower and is geared a lot lower than my car. In a few months we are going to install a hitch mounted bike rack. I can't wait to see how the new air filter affects the low end torque. If the gain is anything like what I experienced in my car I estimate that the added air flow will at least negate the load created by the hitch, rack and bikes. Who would have thought an air filter could make such a big difference?

Thanks again!

Sacha McNeil
Colorado Springs