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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   5.0 out of 5 stars   7 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
Air Filter ColorRed
Air Filter Height6 in (152 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-46
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishBright Aluminized Metal
Intake Pipe MaterialAluminum
Product Box Height10.5 in (267 mm)
Product Box Length35.5 in (902 mm)
Product Box Width13.25 in (337 mm)
Product Style77 Series Kits
Replacement FilterRC-5173
Street Legal In All US StatesSee Application Link Above
TUV Approved (Europe)No
Weight11.2 lb (5.1 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 77-2591KP Air Intake Product Reviews

Tuesday, April 4, 2017 - Part 77-2591KP
Product was delivered on time and took less than an hour to install. Definitely notice an increase in acceleration and power. The sound is great too especially with the catback 3 inch Magnaflow exhaust. I'm extremely satisfied with this purchase.

Linwood R Nelson
Laurel, Maryland
Friday, February 24, 2017 - Part 77-2591KP
Easy to install, my F-150 sounds great and has increased performance with my K&N air filter.

David Lind
Saturday, December 31, 2016 - Part 77-2591KP
I got my boyfriend this for Christmas and he absolutely loves it. He doesn't red line anymore when he floors it. It also made his truck a touch louder. Great product.

Emily Martin
Martinsville, Virginia
Monday, October 10, 2016 - Part 77-2591KP
Very nice product. Takes an hour to install, sounds awsome, and a little sizzzz when it starts to take in air. But I love it!

Jonathan Soucy
Levis, Canada
Thursday, August 25, 2016 - Part 77-2591KP
Awesome! K&N makes fantastic air filters. K&N intake and air filters are always the first upgrade when I buy a new car.

Richmond Hill, Canada
Tuesday, March 15, 2016 - Part 77-2591KP
Had a buddy install the system for me, dropped it off and before you know it, it was done. Only took about two hours to install. Looks great in the new truck and, man oh man does my truck sound AWESOME! It's night and day from stock performance to now. Can't wait to get my full exhaust on now.

Get Cool Air
Saint Petersburg, Florida
Sunday, September 13, 2015 - Part 77-2591KP
Unbelievable sound and horsepower increase - also 10 mileage increase, Highly recommended to anyone looking for these features

Roland Roberge
New Hampshire