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Add 10.96 HP to 2006-2008 Honda Ridgeline with K&N Air Intake System

The Honda Ridgeline can carry just over 1500 pounds of cargo in its steel-reinforced composite bed. It meets or exceeds the capability of many of its closest four door pickup competitors.

K&N Engineering 57-3515 air intake system for 2006 to 2008 Honda Ridgeline 3.5 liter engine
K&N Engineering 57-3515 air intake system for 2006 to 2008 Honda Ridgeline 3.5 liter engine
K&N Engineering has developed a performance air intake system (57-3515) that is street legal in 50 states for the 2006 to 2008 Honda Ridgeline 3.5 liter V6 engine. K&N dynamometer testing shows a 10.96 horsepower gain at 5159 rpm.
Honda Ridgeline with K&N air intake 57-3515 installed
Honda Ridgeline with K&N air intake 57-3515 installed


Dyno chart for 2006 Honda Ridgeline with a 3.5 liter engine
Dyno chart for 2006 Honda Ridgeline with a 3.5 liter engine

The 57-3515 was engineered to work within the Ridgeline’s computer specifications while maximizing power and at the same time, allowing air to flow with little restriction. The aerodynamically engineered tube allows virtually free flowing air into the 3.5 liter engine for an immediate power gain.

K&N engineers also used the factory fresh air duct on the 2006 Honda Ridgeline. The factory fresh air inlet in the bottom of the engine compartment guides cool outside air into the intake track.

The powder coated steel heat shield has an opening that allows the fresh air intake duct to feed air to the K&N chrome top air filter (RC-4760). The K&N washable and reusable air filter is also isolated from high engine temperatures by the heat shield which also contributes to the increase in horsepower.

Backed by the famous K&N Million Mile Limited Warranty it takes 90 minutes or less to install the 57-3515 with simple hand tools.

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 12.75 HP to 2005 and 2006 Chevrolet SSR with K&N Air Intake

The Chevrolet SSR or Super Sport Roadster is an anomaly in the automotive world. It is a convertible combined with the look of a customized 1950s pickup and the rear wheel drive powertrain of a sports car.

K&N Engineering 57-3055 air intake system for 2005 and 2005 Chevrolet SSR 6.0 liter V8 engine
K&N Engineering 57-3055 air intake system for 2005 and 2005 Chevrolet SSR 6.0 liter V8 engine
K&N Engineering has developed a performance air intake system (57-3055) that is street legal in 50 states for the 2005 and 2006 Chevrolet SSR with 6.0 liter V8 engine. K&N dynamometer testing shows a 12.75 horsepower gain at 4700 rpm.
Chevrolet SSR with K&N air intake 57-3055 installed
Chevrolet SSR with K&N air intake 57-3055 installed


Dyno chart for 2005 Chevrolet SSR with a 6.0 liter V8 engine
Dyno chart for 2005 Chevrolet SSR with a 6.0 liter V8 engine

K&N has developed a one-of-a-kind carbon fiber top and base air filter (RP-5115) that is oval shaped for the 2005 and 2006 Chevrolet SSR. There is minimal clearance under the hood on the 2005 SSR, but after extensive research and development K&N designed an air filter that is the perfect size specifically for this vehicle.

To immediately see the benefits of a K&N air intake kit simply replace the SSR’s original intake assembly with the 57-3055. Cooler outside air is drawn through our washable and reusable K&N air filter for more power and filtering capacity. It fits into the engine compartment using factory holes and mounting points. A powder coated steel heat shield replaces the stock air box and protects the K&N air filter while isolating it from engine heat.

This K&N air intake system can be installed in 90 minutes or less and is backed by the famous 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.

Cadillac CTS Sedan V6's Enhanced With New Air Filter

Cadillac calls it's CTS sedans the first 100 percent application of Cadillac's art and science approach to passenger-car design. Lean, bold and chiseled, these kings of the road give drivers a rush of adrenaline delivered in a luxurious package.

'K&N 's '07 - '03 Cadillac CTS Replacement Air Filter
K&N's 33-2251 for '07 to '03 Cadillac CTS
The K&N 33-2251 replacement air filter for 2007 to 2003 Cadillac CTS Sedans enhances the CTS driving experience by delivering more air-flow to their robust V6 engines.

The 33-2251 is made to fit directly into a factory air box, and no cutting or fitting is required. The simple drop in design makes it an easy performance add-on for your Cadillac CTS. K&N air filters are designed to increase horsepower and acceleration while providing excellent engine protection. They are designed and hand crafted in the United States by a company loaded with automotive enthusiasts.

K&N 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.


The 33-2251 fits in the following vehicles:


2007 CADILLAC CTS 3.6L V6 F/I - All
2007 CADILLAC CTS 2.8L V6 F/I - All
2006 CADILLAC CTS 3.6L V6 F/I - All
2006 CADILLAC CTS 2.8L V6 F/I - All
2005 CADILLAC CTS 3.6L V6 F/I - All
2005 CADILLAC CTS 2.8L V6 F/I - All
2004 CADILLAC CTS 3.6L V6 F/I - All
2004 CADILLAC CTS 3.2L V6 F/I - All
2003 CADILLAC CTS 3.2L V6 F/I - All

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.

2005-2008 Ford F150 Owners Gain 7.41 Horsepower with K&N Air Intake System

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

Dyno chart for 2006 Ford F150 with a 4.2 liter engine
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.

Boldly Redesigned 2008 and 2009 Jeep Liberty Gets 11.25 Horsepower Boost with K&N Air Intake

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 air intake for 2008 and 2009 Jeep Liberty with the 3.7L V6 enigne
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
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.