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The RR-3004 has an inverted top, providing additional surface area for increased airflow and filtration over any other comparably sized product

We’ve all been there, working on a project when we hit an unforeseen roadblock. All of a sudden, the labor of love we were crafting feels at risk. This is especially true when it comes to the intricacies of project cars, trucks, motorcycles, snowmobiles, etc. One small issue can throw off a huge design and frequently, that is the question of what to do about the air filter? How much air does my engine need? Is there one that will fit? Will it protect my engine? Thankfully, K&N^® is no stranger to this conundrum and offers thousands of Universal Clamp-On air filters to fit just about every application perfectly for superior airflow and superior performance.

If space is at a premium or if you’re looking for a stylish accent to stand out from the crowd, look no further than K&N’s Inverted Top Universal Air Filters like part number RR-3004. These filters take a distinctive approach to design and functionality. Where others look outside for solutions, the RR-3004 looks inside. The top of the filter actually inverts, extending to the inside of the filter thereby increasing filter surface area. With more surface area comes additional airflow and air filtration capability, all without increasing the exterior dimensions of the filter.

The RR-3004 is easy to install with a 2.75” flange inside diameter to clamp onto 2.75” air intake piping. The flange is made from pliable rubber and can even be stretched up to 1/16” to fit in-between sizes. It is 5.75” in diameter at the base and 5.938” in diameter at the top, making it almost a straight cylinder. The RR-3004 is 7.668” tall without the flange. In combination with its over 5-inch diameter, and inverted top, the RR-3004 provides a large surface area to help your engine breathe easy with plenty of clean air.

K&N engineers designed the RR-3004 Inverted Top Universal Air Filter with K&N’s oiled-cotton gauze filter media. This filter is made of 4 layers of cotton gauze, offset from one another, and layered between two mesh screens for structural strength. The filter is then oiled with K&N’s air filter oil to help provide excellent air filtration efficiency and engine protection.

While the RR-3004 is designed to increase horsepower and torque, another benefit of its design is that the filter is washable and reusable. Just once every 50,000 miles or so, depending on driving conditions, simply wash and re-oil the RR-3004 universal air filter using a K&N air filter cleaning kit. In the long run you can even save money by never having to replace disposable air filters over and over again. K&N backs the RR-3004 and all of its Universal Clamp-On air filters with a One Year Limited Warranty with no mileage limitation.

K&N offers thousands of Universal Clamp-On air filters and you can find one that will fit your application by using the Search by Dimension function on KNFilters.com.

The cylindrical K&N E-0664 replacement air filter is designed to increase horsepower and torque for 2013, 2014, 2015, or 2016 Audi RS6 or RS7 V8 Twin-Turbo models

The Audi RS6 and RS7 are the automotive incarnate of wolves in sheep’s clothing. From the outside, you see a beautiful luxury car. The view is the same on the inside; clearly exhibiting itself as a well-appointed luxury estate or sedan. Even starting the engine, your ears are greeted with a humble and smooth V8 note. Nothing jumps out as menacing. But get on the open road, punch the throttle, and the wolf shows its teeth; thrusting you back in your seat with a 560 horsepower twin-turbo V8 and 516 foot-pounds of torque. The RS6 and RS7 seem to have it all: luxury, storage capacity, and stunning performance. So how can one improve on such a brilliant design? Install the K&N^® E-0664 performance replacement air filter for 2013, 2014, 2015, or 2016 Audi RS6 or RS7 V8 Twin-Turbo models.

The E-0664 K&N replacement air filter is designed to increase horsepower and torque for 2013, 2014, 2015, or 2016 Audi RS6 or RS7 V8 Twin-Turbo models. This cylindrical factory replacement air filter has a large surface area and is made using K&N’s oiled-cotton gauze filter media. Its design helps to minimize restriction in the factory air intake system. Your engine will breathe easier and your twin turbochargers can even spool up earlier for more jaw-dropping performance. The oiled-cotton gauze is layered between two wire mesh screens and provides high airflow with outstanding air filtration efficiency.

Another benefit of the E-0664 K&N replacement air filter for 2013, 2014, 2015, or 2016 Audi RS6 or RS7 V8 Twin-Turbo models is that it’s washable and reusable. No longer do you have to throw money away on disposable air filters over and over again. Just once every 50,000 miles (approximately 80,500 kilometers) or so, simply wash and re-oil the filter using one of K&N’s Recharger® air filter service kits. 2013, 2014, 2015, or 2016 Audi RS6 or RS7 V8 Twin-Turbo owners can save money in the long run with the reusable K&N replacement air filter.

The E-0664 is an easy-to-install performance upgrade for the 2013, 2014, 2015, or 2016 Audi RS6 or RS7 V8 Twin-Turbo models listed below. Its brilliant design is a perfect complement to these German-engineered masterpieces. K&N stands behind the E-0664 with a famous 10-year/million mile limited warranty so owners can be confident that this is the last air filter they’ll need to purchase.

Whether your RS6 or RS7 behaves like a sheep most time or shows its heart every chance it gets, give it the superior airflow and superior performance that comes with K&N replacement air filter, number E-0664.

The E-0664 is guaranteed to fit and function on the following Audi models:

2016 Audi RS7 4.0L V8
2015 Audi RS7 4.0L V8
2015 Audi RS6 4.0L V8
2014 Audi RS7 4.0L V8
2014 Audi RS6 4.0L V8
2013 Audi RS7 4.0L V8
2013 Audi RS6 4.0L V8

Find additional Audi performance upgrades, or performance parts for other vehicles, using the Search By Vehicle tool. Use the K&N Dealer Search to find an authorized K&N air filter, air intake system, or K&N oil filter dealer in almost any part of the world.

For all K&N Audi RS6 and RS7 air filters visit the Air Filters for Audi RS6 and Air Filters for Audi RS6 page on KNFilters.com.

K&N’s September 2015 calendar page features the K&N NASA American Iron Ford Racing Mustang RTR race car built in-house by the K&N crew and wrapped in bold K&N graphics. A 2010 Ford Mustang Body In White (BIW) shell forms the basis of the K&N Motorsports Ford Racing Mustang RTR. This American Made pony car is propelled by a stock Ford 5.0L TI-VCT Coyote engine tuned to comply with the American Iron Racing horsepower-to-weight ratio rules.

Download the standard screen version of the K&N September 2015 calendar page featuring the K&N NASA American Iron Ford Mustang RTR race car built in-house by the K&N crew

K&N partnered with quality manufacturers like Ford Racing, Optima Batteries, Eibach Springs and Bassani Exhaust to help make this dream car a reality. This car is so impressive that a Hot Wheels^® 2015 HW City^™ 2010 Ford Shelby GT500^™ Mustang car features a paint scheme designed to match the K&N built Ford Racing Mustang RTR.

Download the wide screen version of the K&N September 2015 calendar page featuring the K&N NASA American Iron Ford Mustang RTR race car built in-house by the K&N crew

The image chosen for the September 2015 K&N calendar page was shot on location at Auto Club Speedway in Fontana, California. This enormous racing facility in Southern California’s Inland Empire plays host to many types of racing including the Auto Club 400 NASCAR Sprint Cup Series race.

Last, but not least are the talented models Miss Jessica Harbour and Miss Caitlin O’Connor. Jessica Harbour, on the left, is from San Diego, California and has worked in film, print, event, and even runway modeling. Caitlin O’Connor, on the right, also brings a wealth of modeling experience to the table including an appearance in the recent movie Southpaw starring Jake Gyllenhaal as a ring girl in the film.

Additional K&N calendar desktop wallpaper images are available to download on the Free K&N Racing Wallpaper for Computer Desktops page. Printed versions of the K&N calendar are available for purchase on KNFilters.com.

K&N's Universal Air Filters are designed and manufactured for a wide variety of applications. K&N clamp-on air filters are found on racing vehicles, motorcycles, generators, snowmobiles, tractors, and more. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter to meet your needs.

K&N Drycharger air filter pre-filter wrap number RU-1750DY is custom made to fit universal air filter number RU-1750 for an excellent fit and extended air filter cleaning intervals

Folks like Leroy Lucas from Indiana have found that K&N universal clamp-on air filters, such as RU-1750, can be just the ticket for applications that wouldn’t otherwise have a performance air filter option. Leroy wrote to K&N and said “I use K&N air filters on my GoKart that I race on dirt. Not once have I had engine problems with dirt damage to my engine thanks to the great filtering of the air. Also with the higher than normal engine RPM's and using a very strong fuel, there has never been a problem with getting a high volume of air that is needed."

K&N Drycharger RU-1750DY is designed to repel water and manufactured with pre-treated hydrophobic yellow polyester featuring a black K&N logo screen printed on its side

Like a K&N replacement air filter, K&N universal air filters are washable and reusable. Vehicles operated in normal highway driving conditions can go up to 50,000 miles before cleaning is necessary. However, off-road racers like Leroy Lucas find that they must clean their filters more regularly. Leroy said “While racing on dirt and being totally exposed, the air filter is only able to be used once (before cleaning is needed) because of the dust and clumps of dirt built up on it. With K&N's ability to be washed, I always have a clean filter. K&N air filters are perfect for racing on dirt. I can't imagine using any other.”

While a K&N air filter should be cleaned when necessary, a K&N Drycharger^® air filter wrap can help extend cleaning intervals. A K&N Drycharger is designed to provide an extra barrier of protection for K&N air filters and add minimal airflow restriction. A K&N Drycharger air filter wrap covers a K&N air filter in a durable polyester material containing uniform micron openings. K&N Drycharger air filter wraps extend K&N air filter service intervals by preventing larger dirt particles from becoming trapped in the air filter’s pleats.

A K&N Drycharger air filter wrap is pre-treated with a proprietary hydrophobic process designed to prevent splashes of water or mud from saturating a K&N air filter. Depending on conditions, and usage, the water repellent treatment is good for 1 to 2 years. K&N Drycharger air filter pre-filter wrap RU-1750DY is custom made to fit universal air filter RU-1750 for an excellent fit. K&N Drycharger air filter wraps are meant to be run dry and can be cleaned with K&N Power Kleen air filter cleaner. The ability to run a K&N Drycharger on his gokart should help Leroy Lucas go longer before cleaning is needed without sacrificing performance.

K&N Drycharger air filter pre-filter wrap RU-1750DY is custom made to fit universal air filter RU-1750. K&N Drycharger RU-1750DY is manufactured with yellow polyester and a black K&N logo is screen printed on its side. A Drycharger for universal air filter RU-1750 is also available in blue, RU-1750DB, or red, RU-1750DR. K&N Precharger air filter wraps function like the Drycharger without the ability to repel water or mud.

Use the K&N Search For Universal Air Filters by Dimension tool to find additional K&N universal clamp-on air filters, and K&N Drycharger or Precharger pre-filter wraps.

Edgar Hetteen was one of the original founders of Polaris Industries and a pioneer in creating the first snowmobiles. Legend has it, in 1960 Edgar Hetteen led a three snowmobile expedition 1200 miles across the Alaskan wilderness to help publicize the snowmobile while demonstrating their reliability and usefulness. Unfortunately, Hetteen’s three-week absence during this expedition caused tension between him and the Polaris board of directors resulting in Edgar’s departure from the company. As a result Edgar Hetteen formed a new company named Polar Manufacturing, later renamed Arctic Cat Enterprises.

Owners of 2014-2016 Arctic Cat Wildcat Trail 700 or Arctic Cat Wildcat Sport 700 models looking to outperform other side-by-sides can do so with the addition of a K&N replacement air filter

Artic Cat is an industry leader in snowmobile design and manufacturing, & the company has also branched out into building all-terrain vehicles (ATV's) and Side-by-Side utility vehicles

While Artic Cat remains an industry leader in snowmobile design and manufacturing, the company has also branched out into building all-terrain vehicles (ATV’s) and Side-by-Side utility vehicles. Watching the kind of success Yamaha was having with their Rhino side-by-side, and later how well the Polaris RZR was selling, Artic Cat released its line of Wildcat side-by-side UTV’s hoping to outperform the competition. Owners of 2014-2016 Arctic Cat Wildcat Trail 700 or Arctic Cat Wildcat Sport 700 models who would also like to outperform fellow side-by-side users can easily do so with the addition of a K&N^® replacement air filter AC-7014.

K&N replacement air filters are made with specially woven cotton gauze. Because cotton, by nature, is more breathable than paper, K&N replacement air filters can flow more air than a typical paper air filter. More air can result in increased performance and improved throttle response. Additional horsepower and torque can come in handy when cresting a dune, or tackling a trail. Even though K&N air filters are designed to increase airflow, it does not come at the expense of filtration efficiency and engine protection.

With four layers of K&N's special tight-weave cotton gauze material Arctic Cat Wildcat replacement air filter AC-7014 was rated at 98.94% efficient overall

K&N engineers place filtration efficiency and dirt retention at the top of the priority list when developing a replacement air filter for all-terrain vehicles. K&N knows that ATV’s, and side-by-sides will be subjected to some of the most extreme conditions on the planet. As such the K&N replacement air filter for the 2014, 2015 & 2016 Arctic Cat Wildcat Trail and Sport uses design elements that go above and beyond standard K&N on-road replacement air filters. With four layers of K&N’s special tight-weave cotton gauze material, replacement air filter AC-7014 was rated at 98.94% efficient overall.

The K&N Arctic Cat Wildcat replacement air filter is an easy to install upgrade designed to provide increased performance, reusability, and long air filter service intervals

K&N replacement air filters are washable and reusable. The high-flow nature of a K&N filter combined with a K&N filter’s pleated design allows for long service intervals before cleaning is necessary. When it is time, K&N Arctic Cat Wildcat 700 replacement air filter AC-7014 can be easily cleaned and returned to service by using one of K&N’s Recharger^® air filter service kits. K&N’s specially formulated Power Kleen air filter degreaser and air filter oil can be purchased in larger volumes for K&N users who need to service their filter more frequently.

K&N replacement filter AC-7014, for 2014, 2015 and 2016 Arctic Cat Wildcat Sport or Trail 700 models, is backed by a one year limited warranty. The K&N Arctic Cat Wildcat replacement air filter is designed to provide increased performance, reusability, and long air filter service intervals without any need for modifications or tuning for the following Arctic Cat models:

2016 ARCTIC CAT WILDCAT TRAIL 700 - All
2016 ARCTIC CAT WILDCAT SPORT 700 - All
2015 ARCTIC CAT WILDCAT TRAIL XT 700 - All
2015 ARCTIC CAT WILDCAT TRAIL 700 - All
2015 ARCTIC CAT WILDCAT SPORT 700 - All
2014 ARCTIC CAT WILDCAT TRAIL XT 700 - All
2014 ARCTIC CAT WILDCAT TRAIL 700 - All

K&N high-flow replacement air filter AC-7014 serves as an air filter cross reference for the OE Arctic Cat air filter number 0470996.

Additional K&N upgrades for the Arctic Cat Wildcat, or for other vehicles, can be found using the Vehicle Search Tool. To find a K&N dealer near you, use Search for K&N Dealer.