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Increase horsepower of your truck with new K&N 77 Series Intake

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The K&N company is known as the inventor and leader in the development and production of reusable cotton gauze filters used in cars, trucks, and SUVs. What started over half a century ago as a small experimenting racing workshop has grown into a global leader in innovating high-performance air intake technology.

Just recently, the company has introduced the new 77 Series high-flow performance cold air intake system designed as a direct replacement for the stock intake tube and air filter of the latest-generation Ford F-150. Use the system to gain a guaranteed increase in horsepower and torque.

K&N® - 77 Series High-Flow Performance Aluminum Polished Cold Air Intake System with Red Filter

Fits: 2021 Ford F-150

Notes: This product is NOT legal for installation on vehicles required to meet CARB standards and/or registered in California and other states following CARB standards, including NY and ME.


  • Series: 77 Series High-Flow Performance
  • Filter Shape: Round
  • Filter Color: Red
  • Tube Finish: Polished
  • System Type: Cold Air Intakes
  • Material: Aluminum
  • Air Filter Material: Cotton Gauze


Air Intake
5 Stainless Steel Worm Gear Clamps
2 Coupler


  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Free-flowing aluminum tube
  • Replaces entire factory air intake system
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • Washable and reusable lifetime air filter
  • K&N Million Mile/10 Year Limited Warranty

Take a look at this page for more information about the new K&N product.
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