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K&N 33-2451 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   42 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®
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 Amount0.86 oz (26 ml)
Height0.875 in (22 mm)
Outside Length10.125 in (257 mm)
Outside Width6.5 in (165 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 lb (0.5 kg)

K&N 33-2451 Air Filter Product Reviews

Monday, August 1, 2016 - Part 33-2451

Tim Haunschild
Carlsbad, California
Monday, August 1, 2016 - Part 33-2451
Filter fitting was a breeze, no tools required. I went on a long trip care averaging 55mpg. This is what manufacturer states but no one can achieve. I am sure the air filter helped.

Ron Tagg
Middlesex, England
Tuesday, July 12, 2016 - Part 33-2451
Lives up to its word.

Ken Baird
Bolingbrook, Illinois
Monday, June 27, 2016 - Part 33-2451
Very good value, for the money, when you consider the cost of paper air filters. I change the oil every 3,000 miles and service the filter at the same time. I also invested in cabin filters for both my cars. Wish I had made my purchase during the hat promotion, maybe next time!

Richard Casey
Chicago, Illinois
Wednesday, June 1, 2016 - Part 33-2451
It's on the car, and I'm hoping for a long service life.

Gary Klein
Waller, Texas
Sunday, May 22, 2016 - Part 33-2451
33-2451 fits 2014 and up Kia Rondo. Same as Carens. Since installing the filter the most noticeable change has been improved fuel economy. Was averaging close to 9l/100kms but now 8L/100km in mostly urban driving.

Monday, May 16, 2016 - Part 33-2451
I am familiar with K&N. This is why I purchased this product. Product was shipped quickly, arrived as promised, and fit perfectly. Easy install. I appreciate being able to just wash the filter out and reuse it once a year. Great product, just wish the price was a little lower to make these accessible to everyone, not just those with more disposable income.

Plainfield, Illinois