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77-2591KP
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K&N 77-2591KP Air Intake

Intake Kits > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   17 Customer Reviews
  • 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 Limited Warranty
The K&N 77-2591KP Air Intake fits some Ford F150 models. See vehicle applications link for details.
The K&N 77-2591KP high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Ford F150 models. The restrictive factory air filter and air intake housing on your vehicle are replaced by this K&N air intake system which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow. The improved air flow allows your engine to inhale a larger amount of air than it would from the stock air intake. More air means more usable power and acceleration throughout your engine’s RPM range. The 77-2591KP air intake comes with a chrome-topped K&N high-flow air filter and a heat shield that installs onto the lower air box. Air is directed through the intake tube into the engine’s throttle body for a guaranteed power gain. The oversized cone shaped air filter can be used for up to 100,000 miles before servicing is needed depending on driving conditions. This air intake is relatively easy to install usually in 90 minutes or less using existing factory mounting points. The tools needed are a screwdriver and an Allen wrench. Some K&N 77 series air intakes are not legal for sale or use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N catalog or website for vehicle applications and specific CARB status for each vehicle and air intake.

[More Information on K&N 77 Series Air Intake Systems]

Product Specifications

Estimated Horsepower Gain13.86 HP @ 4553 RPM
Replacement FilterRC-5173
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamps Included5
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers Included2
Product Style77 Series Kits
Air Filter Height6 in (152 mm)
Intake Pipe Color / FinishBright Aluminized Metal
Intake Pipe MaterialAluminum
CARB EO NumberD-269-46
Street Legal In All US StatesSee Application Link Above
TUV Approved (Europe)No
Weight11.2 lb (5.1 kg)
Product Box Height10.5 in (267 mm)
Product Box Length35.5 in (902 mm)
Product Box Width13.25 in (337 mm)
Mounting Hardware IncludedYes
Warranty1,000,000 Miles/10 Year
Horsepower gains based on similar vehicle dynamometer test. Results will vary.
WARNING: Cancer and reproductive harm--www.P65warnings.ca.gov

K&N 77-2591KP Air Intake Product Reviews

Monday, May 7, 2018 - Part 77-2591KP
Fast shipping. Very easy to install. (I had my step son do it for me) Lol

Joe Slade
Macon, Georgia
Tuesday, May 1, 2018 - Part 77-2591KP
Didn't really enjoy the whistleing noise.

Rolando Herrera
Denton, Texas
Friday, April 6, 2018 - Part 77-2591KP
Very easy to install. All parts fit exactly. Took 30 minutes to install. Great product and great service.

Edward Denton
Woodbridge, Virginia