Latest News

K&N Filters Approved for Stock Class at AMA and NMA Sanctioned Events

K&N Engineering's MX XStream Filters (HA-4503XD), (YA-2506XD), (KA-2506XD) and (KA-2504) are now approved for use in Stock Classes. Amateur racers planning to race Ponca City, Oklahoma or Loretta Lynn's in Tennessee have been concerned, wondering if the K&N Filtration System would be allowed in "Stock" Class Competition at these National Level Amateur Events.

 
K&N Engineering's MX XStream Top Air Filter
K&N Engineering's MX XStream Top Air Filter
The American Motorcycle Association and National Motosport Association said the K&N MX Stream Top Filters are legal for the 125 and 250 Stock Classes. K&N's MX Stream-Top Air Filter is a two piece design that does not use the stock air filter cage, however it includes a built in Back-Fire Screen that acts as an approved flame arrestor.

"If you remove your OEM Air Filter Cage and Back-Fire Screen, but replace it with a K&N, which includes the built-in back fire screen, you are okay for NMA Sanctioned Events," said Ron Henricksen of the National Motosport Association. "As long as you are running a Back-Fire Screen and the Air Box is in tact, you are legal by NMA standards."

Motorcycles cannot be altered in Stock Class races. The only exceptions or changes in the stock class that will be allowed are the Air Breather may be removed or replaced and the air box may be drilled or replaced.

"K&N Filters will be legal in all stock classes, provided they are used in an unaltered OEM airbox," said AMA Sports Motocross Manager Ryan Holliday. "Removing a backfire screen that is attached to the airbox is not legal in stock classes. Supplemental rule # 24 from MX Sports address this issue: Aftermarket air filters may be used in the OEM unaltered air box."

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.

Ford F350, Ford F250 Super Duty V10 Can Benefit from a K&N Air Filter

The Ford "Super Duty" model was redesigned in 2005. Changes include a new interior, new grille, factory installed trailer brake controller and upgraded engines.
Air Filter for Ford F250 / F350 Super Duty
Air Filter for Ford F250 / F350 Super Duty
For the engine, K&N Engineering has designed a new Lifetime Replacement Air Filter (33-2313) for the 2005, 2006 and 2007 Ford F350 Super Duty 6.8L V10 and 2005, 2006 and 2007 Ford F250 Super Duty 6.8L V10.

K&N Filters are custom designed to fit in the factory air boxes. The drop-in design means adding performance is simple; just remove the disposable air filter in the Ford F250 or Ford F350 and replace it with a K&N Air Filter.

The washable, reusable, high flow flat panel air filter is designed to increase horsepower and acceleration, while providing excellent filtration. The 33-2313 is 1 inch in height (25mm) with an outside length of 15.313 inches (389mm) and an outside width of 7.25 inches (184mm).

Unlike disposable filters, K&N Air Filters use a unique pleated design comprised of an oiled cotton fabric sandwiched between two layers of epoxy-coated aluminum screen. The filters capture airborne dirt particles while allowing high volume air flow. These particles then cling to the outside of the filter and become part of the filtering media.

Also, K&N's 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. K&N invented the concept of washable, reusable filters more than 35 years ago.

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.

K&N Replacement Air Filter Available for 2006 to 2010 Chrysler PT Cruiser

A refined retro look and more power define the new 2006, 2007, 2008 and 2010 Chrysler PT Cruiser. The crossover utility vehicle has a redesigned interior with a new instrument panel and a new center console. Horsepower has been increased on the high output turbo, now rated at 230 with 245 lb.-ft of torque.

Air Filter for the 2006, 2007, 2008 and 2010 Chrysler PT Cruiser
Air Filter for the 2006, 2007, 2008 and 2010 Chrysler PT Cruiser
K&N Engineering has released a new Lifetime Replacement Air Filter (33-2351) for the 2006, 2007, 2008 and 2010 Chrysler PT Cruiser 2.4L L4. The K&N Air Filter is custom designed to fit in the factory air box. The drop-in design means adding performance is simple, just remove the disposable air filter in the Chrysler PT Cruiser and replace it with K&N's Air Filter (33-2351).

The washable, reusable, high flow flat panel filter is designed to increase horsepower and acceleration while providing excellent filtration. The 33-2351 is 1.125 inches in height (29 mm) with an outside length of 10.063 inches (256 mm) and an outside width of 6.313 inches (160mm).

Unlike disposable filters, K&N Air Filters use a unique pleated design comprised of an oiled cotton fabric sandwiched between two layers of epoxy-coated aluminum screen. The filters capture airborne dirt particles while allowing high volume air flow. These particles cling to the outside of the filter and become part of the filtering media.

K&N 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.

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.

Make the Jeep Grand Cherokee More Powerful with K&N Air Intake

It has a distinctive style and is capable of 410 lb. -14 of torque. The 2006 Jeep Grand Cherokee is the new benchmark performance SUV that provides a comfortable ride and easy handling.

Air Intake for Jeep Grand Charokee and Commander
AirCharger Air Intake for Jeep Grand Charokee and Commander

K&N Engineering, Inc. has made air intake system 57-1549 for 2005 to 2010 Jeep Grand Cherokee 5.7L V8 and 2006 to 2010 Jeep Commander 5.7L V8.

K&N test have shown an estimated horsepower gain of 15.3 at 5046 RPM with the 57-1549 Air Intake Kit. "This is the first jeep to have a hemi," said K&N Performance Kit Manager Bert Heck. "We made an intake that has very good power and now K&N has the whole jeep line covered."

K&N's (57-1549) rotationally molded polyethylene intake kit uses a conical shaped High-Flow Chrome Top Air Filter (RF-1048) that can fit into the engine compartment using factory holes and mounting points.

It takes less than an hour to install this kit and the lifetime K&N Air Filter performs for up to 100,000 miles before service is required depending on driving conditions.

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.

Add More Than 11 Horsepower to 2005 to 2010 Dodge Magnum and Chrysler 300 with K&N Air Intake

The 2005 Dodge Magnum has its own classification, it's not a station wagon it is a sports-tourer wagon. The Magnum is cast on a new platform of large-car scale with a powerful engine mounted up front and all torque directed to the back tires. This is the first rear-wheel drive car from the Dodge brand in nearly 20 years.

Air Intake for Dodge Magnum and Chrysler 300
Air Intake for 2005, 2006 and 2007 Dodge Magnum and Chrysler 300
K&N Engineering can make the Dodge Magnum add horsepower with a new 57-Series Generation II Fuel Injection Performance Kit (57-1543). The FIPK is for the 2005, 2006, 2007, 2008, 2009 and 2010 Dodge Magnum 3.5L V6 and the 2005 through 2010 Chrysler 300 3.5L V6. K&N's Dyno tests show an estimated 11.6 horsepower gain at 6215 RPM.

The 57-Series Air Intakes (57-1543) features three main aerodynamically engineered components: a famous K&N High-Flow Replacement Air Filter (RF-1048), a metal heat shield and a rotationally molded polyethylene intake tube that has been routed for optimal performance.

"With this kit (57-1543) K&N now has an FIPK for all three engine sizes in the Magnum," said K&N Performance Kit Manager Bert Heck. "It's a very simple kit to install."

The K&N FIPK also includes illustrated instructions along with all the mounting hardware. The average owner can bolt on the 57-Series FIPK in less than 90 minutes with simple hand tools. It also comes with the famous K&N Million Mile Limited Warranty.

The K&N High-Flow Replacement Air Filter (RF-1048) can be repeatedly washed and re-oiled with a K&N cleaning kit. Service intervals can be up to 100,000 miles (depending on driving conditions).

Find K&N products for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer in your part of the world.