SKU: 38947818073

K&N Air Filter (33-2281)

Sale price$49.67 Regular price$55.19
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

K&N Air Filter (33-2281)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

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.

Features:

  • 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

Most air filters on the market are a compromise. Many high-performance filters deliver better airflow, but sacrifice filtering ability and engine protection in the process. OEM filters, which are usually made of paper, filter adequately but at the expense of airflow. And airflow decreases as these air filters become dirty. Not so the K&N air filter. K&N air filters increase airflow without decreasing filtration ability, and the increased airflow remains consistent throughout the filter's service interval. The secret is in the K&N filter's construction.

K&N's initial goal was to develop a filter that would deliver increased airflow during dirty, dusty off-road racing conditions. Increased airflow improves the efficiency of the combustion process, increasing horsepower and torque. But just increasing airflow without ensuring adequate filtration under those conditions would result in a ruined engine. K&N's solution was a filter design consisting of 4 to 6 layers of cotton gauze sandwiched between two aluminum wire screens. The cotton is then treated with a specially formulated grade of oil that causes tackiness throughout the cotton’s microscopic strands. The resulting K&N filter not only delivers increased airflow while trapping dirt particles that could harm your engine, that level of airflow is maintained even as the filter gets dirty. The layers of oiled cotton fibers in the K&N filter trap dirt particles that are smaller than the holes in the filter media. The thickness of the layers also allows the K&N filter to trap dirt and dust on many levels, trapping more dirt without decreasing airflow. Contrast this with a paper filter that only traps dirt on its surface; as the surface area becomes clogged, the airflow rate goes down.

Each K&N air filter is custom designed to fit into your existing factory air box. The K&N filter is economical because it's the last air filter you'll have to buy for your car. It can be washed and reused many times, and since you can usually drive up to 50,000 miles between servicing, you won't have to clean it very often. And every K&N filter is backed by K&N's Million Mile Limited Warranty. By the way, check the CARiD reviews and read what the customers think of K&N porducts.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 38947818073

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4.5 ★★★★★
Based on 13 reviews
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Corky
Bozeman, US
★★★★★ 4
waist is small
Very cozy, warm, waist is very small although they fit everywhere else. I have an average waistline, not thick through the middle. I had to make a slit in the waistband and cut the elastic. Otherwise they would have been too tight to be comfortable. I have washed them several times and the slit I made in the fabric hasn't raveled or gotten any bigger. I'm happy with these, they keep me warm.
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Reviewed in the United States on March 17, 2026
T
Verified Purchase
Tweet T Georgia
Battle Creek, US
★★★★★ 5
Perfect !
Just as advertised, my elderly Mom loves these bedsure fleece fuzzy pajamas, the color is as shown, they washed up great, they are very thick and well made, they keep her very warm and are super soft ! The size was perfect too. She loves that the shirt has pockets, and although they fit her perfect, she wish the waist was drawstring.
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Reviewed in the United States on January 24, 2026
P
Verified Purchase
Pat Beaver
Boise, US
★★★★★ 5
Softest warmest set ever
So warm and comfy, softest material, best thing ever for these cold winter nights, washes beautifully,
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Reviewed in the United States on April 11, 2026
N
Verified Purchase
Nini
Belleville, US
★★★★★ 5
Great pjs
I ordered a medium and it’s much too large for me! I gave it as gift to a family member. I’m 4’11”. And 105 lbs.. I love the softness and warmth of the pjs. My daughter loves them and medium is prefect for her. The quality of the material is wonderful and designed prefect the weight of the fabric is just right!
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Reviewed in the United States on February 17, 2026
T
Verified Purchase
terry asmus
Birmingham, US
★★★★★ 3
Light weight..very warm
My mistake because living in Texas this is way too warm to wear...would be great in cold weather climates.
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Reviewed in the United States on February 22, 2026

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