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The 2006 Ford F-150 is one of America’s best selling full size pickup trucks. One reason is its great rating from the Insurance Institute for Highway Safety and its five-star safety rating from the NHTSA.

K&N Engineering 57-2572 for 2005 to 2008 Ford F-150 4.2 liter V6 engine

K&N Engineering has designed a performance air intake system (57-2572) that is street legal in all 50 US States for the 2005 to 2008 Ford F-150 4.2 liter V6 engine. K&N dynamometer testing shows a 7.41 horsepower gain at 4106 rpm.

Ford F-150 with K&N air intake 57-2572 installed


Dyno chart for 2006 Ford F150 with a 4.2 liter engine

A powder coated steel heat shield isolates the filter element and protects the K&N oversized chrome top air filter (RC-5046) from engine heat. Cooler outside air is drawn through the K&N air filter for an immediate power gain. The K&N air intake system replaces the factory intake tube and air box. The factory air box is restrictive in size and restrictive in air flow.

It takes less than 90 minutes to install this K&N air intake system to eliminate air path restriction and allow virtually free flowing air into your engine. K&N air intake systems also come with the famous K&N Million Mile Limited Warranty.

The high flow technology invented by K&N and made in the USA provides the best balance of airflow and filtration. The RC-5046 cone shaped air filter is also washable and reusable and can go up to 100,000 miles before cleaning is necessary.

The 57-2572 can be easily installed in 90 minutes or less and is backed by the K&N Million Mile Limited Warranty.

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.

Jeep's popular Liberty model received an aggressive makeover for 2008. Bold lines, modern round-headlights, and that unmistakable vertical-slat grill compliment the very capable Liberty package. Seeing the potential for improvement K&N Engineering seized the opportunity to build one of their Performance Air Intake Systems (57-1559 and 57-1559) for the 2008 and 2009 Jeep Liberty with the 3.7L V6 engine.

K&N's Performance Air Intake System for 2008 and 2009 Jeep Liberty 3.7L V6

Dyno chart for 57-1559 and 57-1559
air intake systems

With the addition of K&N Engineering's Performance Air Intake Systems (57-1559 and 57-1559), Liberty owners can realize a gain of more than 11 horsepower. K&N's Research and Development Department tested a 2008 Jeep Liberty 3.7L V6 on our in-house dynamometer. Results showed an impressive 11.25 horsepower gain @ 4800 RPM.

K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten airflow. This allows your engine to pull in air with ease compared to the OEM air filter assembly. More air means more power and torque when you need it. With a K&N Performance Air Intake System, consumers can count on extra horsepower whether driving around town, towing, or hauling five passengers plus gear on a camping trip.

These air intake systems use a conical shaped chrome top high-flow air filter (RF-1048) and powder coated aluminum heat shield in place of the vehicle's stock air box. The result is an air filter that captures harmful particles, provides more surface area, flows more air, and has a long service life. This K&N air filter performs for up to 100,000 miles before service is required depending on driving conditions. Improving the air path between the filter and the motor is the rotationally-molded high-density polyethylene tube. It offers the most flexibility in design and outstanding horsepower numbers. It takes about 90 minutes or less to install this system with simple tools. It is covered by K&N's Million Mile Limited Warranty^™.

Find a K&N product for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer near you.

The Winner’s Circle was a family affair at the IHRA Northern Nationals in Martin, Missouri. Defending Super Rod World Champion Brian Folk took top honors in his category and his brother Nick Folk took the victory in Stock Eliminator. Nick Folk is a former Top Dragster World Champion.

IHRA Northern Nationals Winner's Circle for Folk Family Racing Team in Martin, Michigan, photo courtesy of BME Photography

The weekend began on a high note after Brain Folk drove the team’s Camaro Roadster to a semi-final finish in the annual Moser Axle Mania Shootout. The top 32 IHRA sportsman battle for a $51,000 purse in the Shootout. Folk advanced to the semi-final round, but lost in a close contest to Super Stock qualifier Gil Carty Jr. Folk Racing Team did not win the lion’s share of the prize purse, but enjoyed a good payday overall as second place winners in the shootout.

Folk Race Cars Camaro Roadster driven by Brian Folk


Wegner Racing Engines powered LS-1 Camaro driven by Nick Folk

“That second place win set the stage for the remainder of the weekend,” said Brian Folk. “Nick drove his Wegner Racing Engines powered LS-1 Camaro to the top qualifying spot and moved up the ranks.” Nick Folk took the victory and now has the lead in IHRA Stock Eliminator points. He is also a step closer to take the podium as the 2008 World Champion.

Brian Folk maneuvered his Camaro Roadster through a talented Super Rod field to the finals. He battled Jimmy Lewis, the runaway points leader in 2008 Super Rod championship points. Folk defeated Lewis, even thought the two left the starting line in unison.

“I was just lucky in the final,” said Brian Folk. “When we got near the finish line, he was ahead and I just gave up. Then I looked up and my win light was on. I couldn’t believe it.”

The Folk family uses K&N Products on all their vehicles. “Our K&N air and oil filters are the best on the market,” said Folk. “The dirt stays out of our engines and the filtration is great which gives us a competitive edge on the track."

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.

The Porsche 911 is a racing car for the road with a lineage that dates back more than 40 years. In 1999 a new Porsche 911, known to purists as the 996, made its debut. Radical improvements were made to Porsche's flagship vehicle, most notably the new water-cooled 6-cylinder boxer engine.The company's racing heritagehelped shape the 996's driver environment, its controls, and of course, its performance.

K&N Engineering, Inc. has designed a Performance Air Intake System (57-7000) for the 2002 and 2003 Porsche Carrera 3.6L H6, 1999 to 2001 Porsche 911 3.4L H6, 2004 and 2005 Porsche 911 non-turbo 3.6L, and 2001 and 2002 Porsche 911 with the 3.6L engine.

The Porsche Carrera boasts increased performance over the previous generation 911. Install a K&N Performance Intake System and the Carrera is an even greater force to be reckoned with. K&N tests on our in-house dynamometer have shown an estimated gain of 23.80 Horsepower at 5500 RPM with the 57-7000 Intake System. "We were able to get such good horsepower because the original factory airbox is restrictive," said K&N Performance Kit Manager Bert Heck. "The design of the K&N Intake Tube and repositioning of the mass air sensor is a big reason why we were able to get so much power."

K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten airflow. This allows your engine to pull in air with ease compared to the OEM air filter assembly. More air means more power and torque when you need it. With a K&N Performance Air Intake System, consumers can count on extra horsepower whether driving around town, enjoying a winding mountain road, or shooting for a new track record.

This air intake system uses a conical shaped carbon fiber top high-flow air filter (RP- 4630). "We used the carbon top on the filter to add to the appeal of the Porsche look," said Heck. Also included with the 57-7000 is K&N Drycharger^® part number RC-4630DK.The K&N Drycharger^® is a silicone treated, polyester wrap that is made to cover K&N Air Filters. Uniform micron sized openings in the Drycharger allow optimum airflow, increase service life, and repel water.
This intake system uses the largest conical shaped High-Flow Carbon Top Air Filter (RP- 4630) that can fit into the engine compartment and a powder coated aluminum heat shield in place of the vehicle's stock air box. The result is an air filter that captures harmful particles, provides more surface area, flows more air, and has a long service life. This K&N air filter performs for up to 100,000 miles before service is required depending on driving conditions. Improving the air path between the filter and the motor is the rotationally-molded high-density polyethylene tube. It offers the most flexibility in design and outstanding horsepower numbers. "It's a very straight forward installation" according to Heck and takes about 90 minutes or less to install this system with simple tools. It is covered by K&N's Million Mile Limited Warranty^™ and is street legal in all 50 US States.

Find a K&N product for your vehicle using the K&N application search then use the K&N dealer search to find a K&N dealer near you.

The record books show double World Speedway Grand Prix Champion Jason Crump has finished on the podium at the last four Scandinavian Grand Prix. The record books also show current points leader Nicki Pederson has failed to make the final on all four occasions.

Australian Ace Jason Crump confident about Scandinavian Grand Prix in Malilla

“If statistics are anything to hold on to, then Jason is in the chase for the World Championship,” said Roy Stone, Crump’s Media Relations Manager. “Jason is currently third overall in points standings, with Nicki Pederson of Denmark at first and Leigh Adams of Australia in second place.”

Jason Crump is a 17-time Grand Prix winner


World Speedway Grand Prix Champion Jason Crump is in third place after six rounds

“My chances of winning the World Championship are very much alive,” said Crump. “I will be racing with my K&N air filters as I always do and a win in Sweden will keep me in the running.”

Crump is just one Grand Prix win away from equaling the number of Grand Prix wins set by six-time World Speedway Champion Tony Rickardsson. “You don’t win World Championships on past performances,” said 17-time Grand Prix winner Crump. “There have been five different winners out of six Grand Prix this year and the field is very strong. I know what I need to do to win and I am feeling very confident now.”

Crump has had solid races over the last two months. “I will be going to Malilla in Sweden to win and capture as many points as I can,” he said. “I know I have a tough job ahead of me for the rest of the season. I will be fighting until the end.”

Follow Jason Crump throughout the racing season at the K&N news site. 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.