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K&N 33-2231 4.8 out of 5 stars 4 Customer Reviews
Replacement Filters > Replacement Air Filter

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33-2231
 
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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
33-2231 Cross Reference
Installation Instruction Sheet
33-2231 Vehicle Applications


Part 33-2231 Product Specifications
Product Style: Panel Air Filter
Height: 1.063 in (27 mm)
Outside Length: 9.375 in (238 mm)
Outside Width: 6.875 in (175 mm)
Air Filter Shape: Panel
Filter Material: Cotton Gauze
Package Contents: 1 Air Filter
Package Quantity: 1
Filter Re-Oiling Amount: 1 oz (30 ml)
Weight: 0.77 lb (0.35 kg)
Product Box Length: 7.72 in (196 mm)
Product Box Width: 1.75 in (44 mm)
Product Box Height: 9.69 in (246 mm)



Product Reviews    See all reviews!  Review part 33-2231

 Love it! This is clearly the best air filter money can buy for your car.
Jason A., Paris, Kentucky
 The air filter works well in my son's BMW 330ix.
Mark Putnam, Orange, Virginia
 The installation and directions for the product was clear and easy to do. Installed the filter and went for a drive. The car felt smoother in throttle response and love the simple mod for improved performance.
Tomi, Irvine, California