K&N Filters Offers Dependable, Guaranteed Horsepower with Their Cold Air Intakes

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Cold Air Intake Installed

What Does a Cold Air Intake Do?

What Does a Cold Air Intake Do?
In 1969, K&N introduced the very first reusable, high-flow cotton gauze air filter. This revolutionary performance air filter was initially designed for racing, but soon found its way onto countless street cars and custom built hotrods. By the late 80's, fuel injection was becoming the industry standard, so K&N introduced the idea of bolt-on performance air intakes. Like its first high-volume air filter, their new cold air intake systems were proven to significantly increase horsepower and torque, and they quickly became the gold standard for custom car builders, off-roaders, racers, and performance enthusiasts across the globe.

Today, K&N cold air intake systems are the go-to performance upgrade for anybody wanting to get the most horsepower and efficiency from an engine. These bolt-on performance kits are easy to install, and the reusable cotton gauze air filters are warrantied for up to one million miles. But let's look at how they work.

How a Cold Air Intake System Works
The best way to explain a cold air intake system is to think of your car's engine like a pair of lungs. In order to make power, the cylinders have to inhale air to create the explosion that produces wheel-turning horsepower and torque. Since cold air contains more oxygen molecules than warm air, injecting a higher volume of oxygen-rich air into the cylinders allows the engine to burn fuel more completely during the combustion cycle. This "combustion efficiency" results in an increase of horsepower and torque, using roughly the same amount of fuel. Put simply, if you add oxygen to a fire, you get a stronger fire. K&N cold air intake systems are designed to deliver more oxygen-rich cold air into the engine than a stock air intake system. This results in a stronger 'explosion', which contains more force to push the piston down and turn the crankshaft. That extra energy/power is then transferred to the transmission and out to the wheels.

Cold Air Intake 69-8619TS Installed

Cold Air Intake 69-8619TS Installed

O2 = HP
The resulting horsepower gain varies by product and application, but each K&N cold air intake system has been designed to increase airflow efficiency for specific vehicles and their engines. Each of our performance air intake kits undergo thousands of hours of testing to ensure that the high-flow K&N air filter and intake tube is perfectly positioned to collect and deliver the coldest air possible. An engine bay is filled with low-performing warm air, and if the air filter placement is less than ideal (usually due to space limitations), our cold air intake systems will use high temperature heat shields to prevent warm air from entering the system.

Breathing in More Power
Clean air is vital to the performance of not only the engine, but a cold air intake system as well. That's why each K&N performance intake system comes with one of our high-flow cotton gauze air filters. These legendary K&N air filters are made from 4-6 layers of our proprietary cotton gauze material, sandwiched between 2 layers of rugged aluminum mesh. When combined with the unique FilterCharger oil, the cotton fibers are able to attract contaminants that are smaller in diameter than a human hair. This type of filtration is called "depth loading", and it keeps dirt particles trapped within the matrix of cotton fibers, while more air flows through to the engine. K&N air filters typically score 97%-99% filtration efficiency on the ISO 5011 Air Filter Test, which means more air gets into the cylinders, and more contaminants get removed from that air.

Installing a K&N Cold Air Intake System
Thanks to extensive Research & Development, K&N engineers are able to create cold air intake systems that are extremely effective, yet easy to install. Many of our performance intakes can be installed using the factory mounting points, so you typically won't need more than two wrenches and a screwdriver. But regardless of which system you choose, it will come with a step-by-step instruction guide, complete with color photos of each step, and a tool list. Plus, our Technical Support team is just a phone call away.

Cold Air Intake on Dyno

Cold Air Intake on Dyno

Dependability is Guaranteed
Besides increasing horsepower and torque, a K&N cold air intake system will save you time and money. Every K&N air filter can be washed and reused over and over again. So, you won't have to buy a new air filter every 10,000-15,000 thousand miles. Just wash out your K&N filter every 100,000 miles (depending on driving conditions), then re-install it. And, the entire system is backed by the K&N 10-year/Million Mile Limited Warranty, so you get guaranteed performance and guaranteed quality.

Street Legal in All 50 States
Many of the K&N cold air intake systems are completely street legal in all 50 states, and will come with a California Air Resource Board (CARB) Executive Order (EO) number which guarantees that particular air intake kit has been tested to comply with the current emissions standards. EO numbers apply to the kit, as well as to the year, make and model of vehicle that it is being installed on. Intake systems without an EO number are street legal in most states, but cannot be installed on emissions controlled vehicles in the state of California, or other states that have adopted California emission standards. You can use K&N's search by part tool to learn which cold air intakes are CARB exempt, and for which vehicles.

Discover How Much Power You're Missing
We can't guarantee that you will get XX.X more horsepower and foot-pounds of torque, because things like the mileage, modifications and condition of your exact vehicle will factor into the final number. But we can show you the dyno results for a vehicle just like yours, that's been fitted with one of our many K&N cold air intake systems. Plus, we also manufacture lots of other racing and automotive performance parts like high-volume fuel pumps, oil filters, and carbon fiber hood scoops. So to check out what's available for your vehicle, use the K&N search by vehicle tool. Or, you can use the K&N dealer locator to find a K&N dealer near you.


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K&N Engineering in Riverside California is the world's leading manufacturer of washable performance air filters and air intake systems. K&N invented the reusable high flow cotton air filter in 1969 and has been perfecting the technology ever since. K&N is a world class filtration company selling air filters, oil filters, and intakes in over 50 countries. K&N sells over 5,000 products designed for cars, trucks, motorcycles, engines, and industrial applications. From their Million Mile Warranty to their Consumer Protection Pledge, K&N stands behind their products and their consumers 100%. The distinctive K&N logo represents performance from one of the original performance companies. For more information, visit