SKU: 68286450177

K&N Air Filter (33-5031)

Sale price$49.67 Regular price$55.19
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Ships within 48 hours · Estimated delivery Sep 7 - Sep 12

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Description

K&N Air Filter (33-5031)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: 68286450177

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COLIN SHAWN O'SHEA
Louisville, US
★★★★★ 4
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Style: SPF 50, Size: 6 Ounce (Pack of 1)
Great sunscreen for summer! The spray goes on evenly, smells nice, and isn’t sticky. It protects well even on really sunny days, and the water resistance is a big plus. Easy to toss in a beach bag and use on the go.
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Reviewed in the United States on November 22, 2025
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Alana G
Pawtucket, US
★★★★★ 5
Smells great
Style: SPF 50, Size: 6 Ounce (Pack of 1)
Works so well and feels so smooth and makes my skin glow
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Reviewed in the United States on May 11, 2026
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Nimby5956
Boise, US
★★★★★ 5
Quality Product
Style: SPF 50, Size: 6 Ounce (Pack of 1)
Have been using this for years. Love this product. Works great.
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Reviewed in the United States on April 9, 2026
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Jaqueline Campos
Battle Creek, US
★★★★★ 5
Good sunscreen, but the shade didn’t work for me
Color: Medium
I bought the Colorescience Flex in Medium because I had seen great reviews and liked the idea of a tinted mineral sunscreen. The formula itself felt really high quality and it did provide good sun protection, but the shade didn’t end up working for my skin tone. ✔️ What I liked: - Great daily mineral sun protection. - Lightweight texture and easy to apply. - Didn’t irritate my skin or cause breakouts. - Nice natural finish at first. ❌ What I didn’t like: - On my skin, the Medium shade looked orange. - The color didn’t blend well with my undertone. - I had to work it in quite a bit to avoid a noticeable line with my neck. I think the formula is really good, but the shade selection definitely requires care. In my case, it just wasn’t the right match
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Reviewed in the United States on May 21, 2026
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Sasha
Lexington, US
★★★★★ 5
Finally found my perfect match!! In foundation!
Color: Medium, Color: Medium
I’ve used many high-end foundations over the years, but Colorescience has become my everyday favorite. It feels incredibly lightweight on the skin and provides a natural, healthy-looking finish that doesn’t feel heavy or cakey. The added SPF is a huge bonus and makes my morning routine so much easier. I also love how perfectly it matches my skin tone, it blends seamlessly and looks like my skin, just more even and polished. If you prefer a natural, lightweight foundation with the added benefit of sun protection, this one is definitely worth trying.
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