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K&N offers a full line of replacement air filters for thousands of applications

Automotive Air Filters

This is what K&N is most known for. These air filters are made to drop right into the stock air box and are designed to increase horsepower and throttle response. They last up to 50,000 miles between cleaning, depending on driving conditions and carry a 10-year/Million Mie Limited Warranty so you know you this will most likely be the last filter you buy for your vehicle.

Motorcycle/ATV Air Filters

Whether you ride a Kawasaki or a Harley, a KTM or an Indian, K&N makes replacement washable and reusable air filters for your motorcycle or ATV. Designed to provide an increase in horsepower and acceleration, these filters are made of a pleated cotton media that offers a large filtration area and low restriction. Made to fit into the OEM air box, each filter has an application specific sealing bead for a perfect fit.

Replacement air filters from K&N for automotive applications are designed to increase horsepower

Did you take that old Mustang and shove a Coyote into it? Or maybe you built a C10 around an LS1. Whatever the case may be, you are going to need to protect your investment. One of the best ways to filter out the incoming air is with a K&N universal air filter. These filters come in a variety of sizes. There are hundreds of sizes available for almost any application. These filters come with a one-year warranty and are designed to increase horsepower.

Cabin Air Filters

Protecting your engine is important, but protecting your family is more important. K&N offers a line of washable and reusable cabin air filters to protect your loved ones from the harmful mold, mildew, pollen, fungus, and germs that could potentially enter your cabin. Made from a synthetic material, the K&N cabin air filters are electrostatically charged to capture and hold onto particles before you breathe them in. These filters come pre-treated and ready to install and are guaranteed for 10-years or 100,000 miles.

Industrial/Small Engine Air Filters

To protect your family from harmful contaminants use a K&N washable cabin air filter

Some of the hardest working engines reside inside outdoor power equipment and small engine applications. We all remember to add oil and gas to our lawnmowers, but when was the last time you thought about the air filter inside your John Deere mower? These filters have to work overtime to keep out all of the clippings, dust, soot, and other airborne contaminants. K&N offers a full line of direct replacement air filters for industrial and small engine applications. Whether it is a Tecumseh-equipped APU or Briggs and Stratton-equipped mower, check the small engine and industrial air filter page on the K&N website.

Heavy Duty Diesel Air Filters

K&N’s line of heavy duty diesel air filters is designed for class 4-8 trucks and diesel equipment, motorhomes and RVs, busses and emergency vehicles, refrigeration equipment, generators, and more. What better way to save money than by not having to purchase a new air filter a couple times a year. With a K&N replacement filter, just take it out every 300,000 miles (depending on driving conditions), spray it with K&N degreaser and spray it off. The dirt and grime comes right off. No need to oil these filters as they are comprised of non-woven synthetic media between two layers of aluminum screen.

Cleaning Kits

If you already own a K&N air filter and need to clean it, we have what you are looking for. There are three basic types of cleaning and product that K&N offers. The standard air filter cleaner and oil will clean and refresh most standard replacement automotive air filters. The synthetic air filter cleaner is for use on K&N hybrid filters, Blackhawk air filters, and other synthetic air filters. There is also a heavy duty synthetic air filter cleaner for K&N’s heavy duty diesel air filters. Lastly, there is the K&N cabin air filter cleaner and refresher for K&N cabin air filters. Check the K&N cleaning kit page for all of your air filter cleaning and oiling needs.

The RU-3106HBK is a universal air filter for custom applications that is oil-free

K&N offers a line of filters specifically made for racing applications. From drag racing scoops and filters to kart and off-road filters, K&N racing filters and assemblies are designed to improve performance while protecting the high dollar engines in these vehicles. Like all K&N filters, these are washable and reusable and can be used on both carbureted and fuel injected applications.

Marine Flame Arrestors

Are you looking for a little more out of your boat or personal watercraft? K&N flame arrestors are designed to increase horsepower and torque of many popular boat and personal watercraft manufacturers. They are washable and reusable and are approved per SAE J1928 standards to ensure your safety while on the water.

Crankcase Vent Filters

K&N makes crankcase vent filters in a number of styles and sizes for many applications

Air Filter Facts

Ever wondered why air flow is so important or which air filter is right for your needs? Look no further than K&N for a full list of air filter facts to fill your knowledge bank. After reading through these you’ll be able to properly explain to your buddy with the 572ci engine why he needs to run a bigger air filter.

Air Filters by Vehicle Manufacturer

If you need to find the right replacement air filter for your vehicle, you can use the K&N search by vehicle manufacturer tool. This will quickly and accurately provide you with the correct air filter for your vehicle.

Cabin Air Filter by Vehicle Manufacturer

Just like the air filter search by vehicle manufacturer, K&N offers a similar one for cabin air filters. Finding the right K&N washable and reusable cabin air filter is just a few clicks of the mouse away. What are you waiting for? Get in there and get one for every vehicle you own. You owe it to yourself and your family to protect them from harmful airborne particles.

The K&N Performer award winning Softail from the DC IMS sits low and long

So let’s get down to brass tacks. Actually, let’s get down to brass motivation, since that was the creative spark behind this fantastic build. The malleable alloy is near and dear to Latimer’s heart.

Latimer's custom Harley sits on the IMS red carpet

Those brass touches abound on the Softail custom, and Latimer carried the theme off without making it seem overdone. To accentuate the brass on the fuel tank, oil tank, trim, and various fasteners and brackets, Latimer decided on a beautiful gunmetal paintjob. Getting the paint just right is a hallmark of a Rats Customs build, and the flat grey finish on the Softail is a huge departure from the flashy coating on his Hot Wheels build.

Brass accents are the defining elements of the Rats Customs Twinkie Softail

Bringing Twinkie back down to speed is the job of the Galfer brakes featuring wave rotors. Those rotors are bolted to spoked wheels with rims finished in understated black.

Latimer crafted the very cool shortie exhaust out of stainless steel and tipped the pipes with, you guessed it, brass. The stainless intake velocity stack is also a Rats Custom creation (although K&N hopes the owner will run one of our filters out in the real world!)

Twinkie rumbles through an unrestricted exhaust tipped in brass

Latimer is only in his mid-20s but he is no rookie in the custom bike world. The Twinkie Softail is one of over a half-dozen customs he has crafted.

As far as the future, Latimer said, “I plan on using the support that K&N has provided to bring a flat tracker build I'm currently working on up to the next level.” Ross, we are more than glad to help!

The K&N RK-3944 intake system is designed for XL-Series Harley-Davidson motorcycles.

The K&N RK-3944 intake system is designed for these Harley Davidson models. The system offers an estimated horsepower improvement of 4.33 horsepower at 5596 rpm and also improves torque and airflow. The product is engineered to replace the factory air cleaner. It features a K&N HD-0800 replacement air filter that is washable and reusable. The filter features a multilayered cotton gauze media that has been treated with a special grade of filter oil that makes the strands so sticky they catch and hold particles.

K&N is so sure of the quality of the air filter, it backs it with a 10-year/Million Mile Limited Warranty®, which asserts that the filter will last up to 10 years or 1,000,000 miles without requiring replacement.

The intake system features an aluminum integrated, internal-run breather and a custom aluminum backing plate that mounts directly to the motorcycle’s throttle body. The product comes with mounting hardware and is easily installed with common hand tools.

The K&N RK-3944 intake system is designed to replace the factory air cleaner.

2014 HARLEY DAVIDSON XL883N IRON 54 CI - All Models
2014 HARLEY DAVIDSON XL883L SUPERLOW 54 CI - All Models
2013 HARLEY DAVIDSON XL883N IRON 54 CI - All Models
2013 HARLEY DAVIDSON XL883L SUPERLOW 54 CI - All Models
2013 HARLEY DAVIDSON XL1200X FORTY-EIGHT 74 CI - All Models
2013 HARLEY DAVIDSON XL1200V SEVENTY-TWO 74 CI - All Models
2013 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2012 HARLEY DAVIDSON XL883N IRON 54 CI - All Models
2012 HARLEY DAVIDSON XL883L SUPERLOW 54 CI - All Models
2012 HARLEY DAVIDSON XL1200X FORTY-EIGHT 74 CI - All Models
2012 HARLEY DAVIDSON XL1200V SEVENTY-TWO 74 CI - All Models
2012 HARLEY DAVIDSON XL1200N SPORTSTER NIGHTSTER 74 CI - All Models
2012 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2011 HARLEY DAVIDSON XL883N IRON 54 CI - All Models
2011 HARLEY DAVIDSON XL883L SUPERLOW 54 CI - All Models
2011 HARLEY DAVIDSON XL1200X FORTY-EIGHT 74 CI - All Models
2011 HARLEY DAVIDSON XL1200N SPORTSTER NIGHTSTER 74 CI - All Models
2011 HARLEY DAVIDSON XL1200L SPORTSTER LOW 74 CI - All Models
2011 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2010 HARLEY DAVIDSON XL883N IRON 54 CI - All Models
2010 HARLEY DAVIDSON XL883L SPORTSTER LOW 54 CI - All Models
2010 HARLEY DAVIDSON XL1200X FORTY-EIGHT 74 CI - All Models
2010 HARLEY DAVIDSON XL1200N SPORTSTER NIGHTSTER 74 CI - All Models
2010 HARLEY DAVIDSON XL1200L SPORTSTER LOW 74 CI - All Models
2010 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2009 HARLEY DAVIDSON XL883N IRON 54 CI - All Models
2009 HARLEY DAVIDSON XL883L SPORTSTER LOW 54 CI - All Models
2009 HARLEY DAVIDSON XL883C SPORTSTER CUSTOM 54 CI - All Models
2009 HARLEY DAVIDSON XL1200N SPORTSTER NIGHTSTER 74 CI - All Models
2009 HARLEY DAVIDSON XL1200L SPORTSTER LOW 74 CI - All Models
2009 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2008 HARLEY DAVIDSON XL883L SPORTSTER LOW 54 CI - All Models
2008 HARLEY DAVIDSON XL883C SPORTSTER CUSTOM 54 CI - All Models
2008 HARLEY DAVIDSON XL883 SPORTSTER 54 CI - All Models
2008 HARLEY DAVIDSON XL1200R SPORTSTER ROADSTER 74 CI - All Models
2008 HARLEY DAVIDSON XL1200N SPORTSTER NIGHTSTER 74 CI - All Models
2008 HARLEY DAVIDSON XL1200L SPORTSTER LOW 74 CI - All Models
2008 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2007 HARLEY DAVIDSON XL883R SPORTSTER 54 CI - All Models
2007 HARLEY DAVIDSON XL883L SPORTSTER LOW 54 CI - All Models
2007 HARLEY DAVIDSON XL883C SPORTSTER CUSTOM 54 CI - All Models
2007 HARLEY DAVIDSON XL883 SPORTSTER 54 CI - All Models
2007 HARLEY DAVIDSON XL1200R SPORTSTER ROADSTER 74 CI - All Models
2007 HARLEY DAVIDSON XL1200N SPORTSTER NIGHTSTER 74 CI - All Models
2007 HARLEY DAVIDSON XL1200L SPORTSTER LOW 74 CI - All Models
2007 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2006 HARLEY DAVIDSON XL883R SPORTSTER 54 CI - All Models
2006 HARLEY DAVIDSON XL883L SPORTSTER LOW 54 CI - All Models
2006 HARLEY DAVIDSON XL883C SPORTSTER CUSTOM 54 CI - All Models
2006 HARLEY DAVIDSON XL883 SPORTSTER 54 CI - All Models
2006 HARLEY DAVIDSON XL1200R SPORTSTER ROADSTER 74 CI - All Models
2006 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2005 HARLEY DAVIDSON XL883L SPORTSTER LOW 54 CI - All Models
2005 HARLEY DAVIDSON XL883C SPORTSTER CUSTOM 54 CI - All Models
2005 HARLEY DAVIDSON XL1200R SPORTSTER ROADSTER 74 CI - All Models
2005 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models
2004 HARLEY DAVIDSON XL883C SPORTSTER CUSTOM 54 CI - All Models
2004 HARLEY DAVIDSON XL883 SPORTSTER 54 CI - All Models
2004 HARLEY DAVIDSON XL1200R SPORTSTER ROADSTER 74 CI - All Models
2004 HARLEY DAVIDSON XL1200C SPORTSTER CUSTOM 74 CI - All Models

2016 King of the Hammers Every (Wo)Man Race with the 1st Place finisher, the Queen, Jessi Combs

You may remember her from MythBusters, her Overhaulin' days with Chip Foose, or from All Girls Garage. Or maybe you've followed her as she sets out on her series The List: 1001 Things to Do in a Car before you Die!

Breaking down barriers in off-road, Jessi Combs the Queen of the Hammers in her savvy Ultra4

It's obvious that Jessi Combs loves what she does

But let's go back just a couple steps. On October 9, 2013, Jessi drove the North American Eagle (NAE) Supersonic Speed Challenger in the Alvord Desert, claiming the women's land speed record with an official run of 392.954 mph and a top speed of 440.709 mph. And just a few weeks ago she would return to the Alvord Desert in Oregon breaking her own record and driving 477.59 as part of a complex, ambitious goal to become the fastest woman on Earth.

Behind every great driver is a great team and Jessi's team is no exception

Calm and collected throughout the ordeal, Combs still remains determined to continue her goal of breaking the women’s record of 512 miles per hour, set in 1976. Jessi also remains the fastest woman on four wheels, a record she broke in 2013. When we asked Jessi when she would get back in the seat of the North American Eagle, she assured us just as soon as the car is ready and safe. She's determined to accomplish that goal she has set for herself.

Brains, beauty, and serious bad ass, Jessi Combs has it all

It seemed car guys didn't take her too seriously so she decided to change that. Originally wanting to become an architect, she soon discovered the extensive time and significant cost involved and chose to follow a path that combined her love of design with her passion for speed. Enter Wyo-Tech. Combs earned her degree in custom automotive fabrication and has inspired millions showcasing her skills. Her shop reflects her design sensibilities, from the artwork on the walls to the uber chill vibe the exposed brick walls create. Her surroundings can't help but inspire some amazing builds like the 2016 BMW R nine T.

Jessi's likeness was added to the SEMA sketch wall in the Las Vegas Convention Center

Jessi's design sensibilities abound throughout the shop. Who doesn't love James Dean?

This incredible sign created for the REAL DEAL twosome sits prominently in the shop.

When we asked if there was anyone, dead or alive, who she would most like to spend time with, her response? Her mother. She said she would love to just sit down to dinner and be with her mom. When talking about where she sees herself in five years, her blue eyes sparkle as she admits, "I really want to change the world!" You can bet if anyone can do it, we believe Jessi Combs is that person. She inspires women of all ages to move out of their comfort zone and continues to leave her mark on the automotive world not just for herself, but for all women, everywhere.

Jessi installing the K&N filters on the REAL DEAL 2016 BMW R nine T build featured at SEMA

The finished REAL DEAL land speed inspired 2016 BMW R nine T featured at the BMW Booth SEMA

The panel-shaped K&N 33-3059 replacement air filter

Constructed to be washable and reusable, the filters are offered with different media to assure the best performance for the particular application.

HD-1102 Harley Davidson motorcycle replacement air filter

Meanwhile, conventional paper air filters have a very thick surface area and are tightly compressed and dense so that they can meet the minimum filtration standards. This design restricts airflow. As the paper filter becomes more and more clogged, the air pressure inside drops while the pressure outside remains the same. This results in an excessively high pressure differential causing the dirt particles to push through the paper medium. Airflow decreases even more making it necessary to replace the filter.

E-4142 Briggs & Stratton air filter

K&N also offers air filters with a synthetic non-woven material that are ideal for a wide range of applications including small industrial engines, compressors, generators, utility lawn, garden units and mowers as well as for heavy duty applications including large turbo diesel engines, class 6-8 over-the-road trucks, agricultural and earth moving equipment and diesel motor homes.

The commercial grade air filters include a new hybrid medium that combines the best characteristics of cotton and synthetic non-woven technologies. No oil is used in these filters. Instead, they feature a 3-D lofted filter surface that reduces diesel air filter restrictions. The result is more power and better engine efficiency.

Heavy-duty air filter cleaner

K&N offers air filter cleaners and filter cleaning accessories for its lines of oiled cotton and synthetic air filters. The cleaners are specially formulated to cleanse and recharge the filters so that they can be reused over and over again.

K&N backs the oiled cotton replacement air filters with a 10-year/Million Mile Limited Warranty that guarantees that the filter will last for up to 10 years or 1,000,000 miles without needing replacement.

38-2001S heavy-duty air filter

The cabin air filters are designed to replace the factory cabin air filter from the cabin air filter box that is located under the hood, near the windshield, underneath the dashboard, or behind the glove box.

As in the case of the air filters, K&N also offers a cleaning kit that is formulated to recharge and cleanse the cabin air filter after every 12 months or 12,000 miles of driving, depending on driving conditions, so that it can be used over and over again for the life of the car.

The filters are designed to fit the factory air box and can be installed using common hand tools in just a few minutes.

Air filters can be found by part number or by vehicle manufacturer.