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Replacement Filters > Replacement Air Filter

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33-2321
 
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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 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®
Available Information
33-2321 Cross Reference
Installation Instruction Sheet
33-2321 Vehicle Applications
Air Filter Test Data


Part 33-2321 Product Specifications
Product Style: Panel Air Filter
Height: 0.938 in (24 mm)
Outside Length: 12.5 in (318 mm)
Outside Width: 6.75 in (171 mm)
Air Filter Shape: Panel
Filter Material: Cotton Gauze
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 1.18 oz (35 ml)
Weight: 0.96 lb (0.44 kg)
Product Box Length: 7.72 in (196 mm)
Product Box Width: 1.75 in (44 mm)
Product Box Height: 13.56 in (345 mm)



Customer Feedback      Be the first to review part 33-2321

I love this air filter, the way it makes my 2014 Ford Focus ST sound and perform is amazing. Can't thank my amazing girlfriend enough for getting me this, this past Father's Day. Awesome product.
Paul Waters, Houston, Texas
Car: 2004 Mercury Sable LS, Engine 3.0L, Duratec, V-6 DOHC 86,000 miles. I recently installed the K & N Air Filter 33-2150 in my 2004 Mercury Sable. I noticed improved engine pickup immediately. I have driven appx 400 mile since installing the filter. My engine performance in now very good and my mileage has increased one mile per gallon. The filter will pay for itself in fuel savings alone. This filter is an excellent investment!!
Nelson Davis, Lansing, Michigan
After straight piping and the K&N filter in my '05 Ford dually, I feel like a kid again. (can't tell if I'm getting better mileage cuz I can't seem to keep my foot out of it!)
Gary Runer, Santa Fe, New Mexico