K&N NextGen Cold Air Intake For 2017-2019 Ford F-250/F-350 Super Duty 6.7L 2010-2018 Ford Flex 3.5L Roto-molded heat shield blocks engine

Roto-molded heat shield blocks engine heat effectively

The spider rollers and pins are made with 4140 chromoly steel for added strength and smoother operation than OEM

Built-in vents let in fresh air when you want it and seal shut when the weather turns cold or wet

The R400 produces a unique

K&N NextGen Cold Air Intake For 2017-2019 Ford F-250/F-350 Super Duty 6.7L 2010-2018 Ford Flex 3.5L Roto-molded heat shield blocks engineK&N has spent decades engineering the world's most trusted high flow air intake systems, and the NextGen Cold Air Intake for the 2017 2019 Ford F 250 F 350 Super Duty 6. 7L Powerstroke Diesel is the latest evolution of that legacy. Designed as a direct replacement for the restrictive factory airbox, this system delivers guaranteed increases in horsepower and torque, sharper throttle response, and a deeper, more aggressive intake sound under