2015 Ford F150 5.0-liter V8 Pickup Truck 50 State Street Legal K&N FIPK Air Intake

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K&N 2015 Ford F-150 5.0L street legal air intake system

The K&N 2015 Ford F-150 5.0L FIPK performance air intake system reduces restriction and increases airflow for a 50-state street legal performance upgrade

For over 30 years the Ford F-150 has been the best-selling vehicle in the United States. For 2015 the Ford F-150 was completely redesigned and is currently one of the hottest selling vehicles on the market. The beauty of the 2015 Ford F-150 is its all-aluminum body panels, as well as a new frame made of 77% high-strength steel. The aluminum and high-strength steel have helped the 2015 F-150 shed up to 750 lbs. Less weight means higher payload and towing capacities, more miles per gallon, and a better power to weight ratio.

The 2015 Ford F-150 will benefit from more street legal power from K&N air intake system

The 2015 Ford F-150 has shed up to 750 lbs. and less weight combined with more power from a street legal K&N air intake system will increase the rate of acceleration

Performance minded drivers know that less weight and more power combine to increase the rate of acceleration. K&N can help the lighter 2015 Ford F-150 with a 5.0L V8 engine with a 50-state street legal boost in horsepower and torque for improved towing performance and better acceleration. K&N got to work developing an air intake system for the 2015 Ford F150 5.0L V8 and obtaining an Exemption Order (EO) from the California Air Resources Board (CARB) making this intake available for sale and use in California as well as other states with similar emissions standards.

An air intake system, like one from K&N, is designed to increase power by significantly reducing air intake tract restriction and increasing the amount of air available to the engine. K&N does this by replacing the 2015 Ford F150 5.0L V8 engine’s stock air filter box with an open oversized K&N high-flow air filter, and eliminating the accordion flex hose stock air intake system with a smooth walled and molded K&N air intake tube. Reducing the amount of power wasted on drawing air into the engine can translate into more power where it counts; at the wheels.

Molded K&N air intake for 2015 Ford F-150 5.0L

A molded HDPE K&N air intake tube improves power and maintains a factory-like appearance of 2015 Ford F-150 5.0L models while also being street legal in all 50 states

First, K&N established baseline horsepower numbers on a 2015 Ford F-150 5.0L before installing a K&N air intake, and then repeated the test after installing a K&N air intake. When installed on an otherwise stock 2015 Ford F-150 5.0L, K&N 50 state street legal air intake 57-2591 produced an estimated gain of 12.74 horsepower at 4,555 RPM. Improvements in torque were also seen with the max estimated torque gain of 9.92 lb-ft occurring at a lower 3,730 RPM. K&N is so confident in its cold air intake systems that it offers a K&N air intake Horsepower Guarantee.

2015 Ford F150 5.0L street legal K&N air intake dyno

Improvements in power from installing street legal K&N air intake 57-2591 on a 2015 Ford F150 5.0L will be immediately felt along with the improved engine sound

In addition to a guaranteed increase in horsepower, K&N backs its air filters and air intake systems with a 10-year/million mile limited warranty. K&N is confident in its products because each design undergoes rigorous testing in laboratory and real world situations. Also, K&N will warrant that using its products will not result in a vehicle warranty denial. If ever a vehicle warranty department tries to deny the vehicle warranty, or blame the presence of a K&N product, please feel free to contact K&N customer service at 1-800-858-3333 and K&N will work to resolve the issue.

The K&N street legal performance air intake system for 2015 Ford F-150 5.0L V8 models includes a world famous K&N washable and reusable high-flow air filter RC-5173. The 2015 Ford F150 K&N intake air filter is designed to provide a large surface area that can go up to 100,000 miles between cleanings, depending on driving conditions. When it does come time to clean a K&N air filter, a readily available K&N Recharger air filter service kit will restore the filter to like-new performance. A washable and reusable air filter saves money and the long cleaning intervals can save time on maintenance.

K&N air intake system 57-2591 is engineered to provide a guaranteed increase in street legal horsepower and torque for the following Ford F150 models:

2015 Ford F150 5.0L V8

To find additional K&N F-150 products, please visit the Ford F-150 air filters and Ford F-150 air intakes pages. To find K&N performance upgrades for other vehicles, use the Search by Vehicle tool. To find an authorized K&N dealer nearby, use the K&N Dealer Search function.


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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