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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   4.9 out of 5 stars   36 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, 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
Thursday, May 12, 2016 - Part 33-2451
Glad to get another K&N filter. The oil change place never had my filter in stock. This way I know my car is taken care of. It was easy as changing the regular filter.

Monday, May 2, 2016 - Part 33-2451
K&N makes the best filters in the world. I've had them on every car and motorcycle I've owned since 1990. Never had a single problem.

Richard A. Sawyer
Wednesday, April 13, 2016 - Part 33-2451
Always a great add on to any vehicle. One of the first things I do when I purchase another vehicle. Obviously a better part than stock and for the price it's a winner. This one went in a Hyundai Elantra. Even though the Elantra is not a high performance car, it can breathe easier with K&N. Firm believer in this product.

Palm Coast, Florida
Thursday, April 7, 2016 - Part 33-2451
Excellent customer service, quick delivery, product quality also excellent as was expected.

David Schulz
Ontario, Canada
Monday, March 21, 2016 - Part 33-2451
First, I was very hesitant to buy this K&N filter for my Elantra, but because of the review online, I decided to get one. It didnt let me down. It really adds power to my car during acceleration and now I'm buying again for my son's SUV, which is the tucson. I will highly reccomend this to every car owner out there. Don't believe the negative review. Try it first and decide.

Allan Carvajal
Toronto, Canada
Friday, February 5, 2016 - Part 33-2451
Perfect Fit for a replacement air filter for my GF Kia. I prefer CAI on my vehicles but for resale value this is a great money saver upgrade that will increase resale if that's your goal. And I love the idiot proof sticker for the air box and warranty card that is included with every order.

Gavin Roberts
Hillsboro, Oregon