K&N 33-2021

Replacement Filters > Replacement Air Filter
List Price: $74.21
Your Price: USD $47.99

You Save 35.3%

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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 virtually every vehicle 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]
  • 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®

Product Specifications

Air Filter ShapePanel
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.76 oz (22 ml)
Height1.25 in (32 mm)
Inner WireNo
Outside Length9.813 in (249 mm)
Outside Width6.125 in (156 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height9.69 in (246 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)
Product StyleUnique Air Filters
Top StyleOpen
Weight1 lb (0.5 kg)

Customer Feedback

Be the first to review part 33-2021
Worth every penny, top quality ,awesome sound. I have a '09 Honda Civic si. Easy to follow directions. Installed in 2 hrs.

Baltimore, Maryland
I've been using these air filters for a long time. Everything from a 1.8 in a Honda Civic, 6.6 GMC diesel, and the 350 in my Corvette, you can feel the power increase in the seat of your pants. Never a technical problem. I get one for every vehicle I obtain.

Craig Gamet
Rodman, New York
I have been using K & N filters for years on all my vehicles. easy to use, easy to clean, best of all one price, I don't buy new replacement paper filters and toss the old ones in the trash. A disposable filter for my Honda VTX1300c is about 30.00, I think the k&N was about 68.00. After I installed it, I could feel the response as I rolled on the throttle. It did not transfer my bike to supper horse power, it did make it breathe better. I have one in my Honda Civic, Honda Pilot, and in my Honda 750 Shadow. These are great products and in the end save a lot of money. It cost more upfront, but you will never buy a new paper fitlter again, that's where the savings come in. I had one on my Honda GL1500SE, and rode it for 250,00 miles before I sold it. Only bought one filter, a K&N. Also, they are made in the USA Thanks K&N for a great product

Whittier, California