K&N 77-2575KS Air Intake

Intake Kits / Performance Air Intake System
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$312.99 USD
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Product Overview

  • 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 77-2575KS Air Intake fits some Ford Explorer models. See vehicle applications link for details.
The K&N 77-2575KS high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Ford Explorer 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 77-2575KS air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through the intake tube into the engine’s throttle body for a guaranteed power gain. The intake tube has an attractive silver powder-coat finish that's made to last and it accommodates the factory mass air sensor, crank case vent hose and a replacement silicone EVAP vent line. The tools needed for installation are a screwdriver, pliers, ratchet set and several wrenches. 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]
Estimated Horsepower Gain13.55 HP @ 5500 RPM
Replacement FilterRF-1048
Air Filter ColorRed
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamps Included5
Clamp MaterialStainless Steel
Clamp StyleRegular
Couplers Included1
Product Style77 Series Kits
Air Filter Height6 in (152 mm)
Intake Pipe Color / FinishSilver
Intake Pipe MaterialAluminum
CARB EO NumberD-269-57
Street Legal In All US StatesSee Vehicle Applications
TUV Approved (Europe)No
Weight10.5 lb (4.7 kg)
Product Box Height12.5 in (318 mm)
Product Box Length22.25 in (565 mm)
Product Box Width14.25 in (362 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

K&N 77-2575KS Air Intake Product Reviews

Tuesday, September 18, 2018 - Part 77-2575KS
One word about the 77-2575KS for my 2014 Ford Explorer. WOW. It did take an hour to change out the old air box. Do read the instructions and do watch the video. With that knowledge and assembling the handful of tools it was easy, straight forward and quick.After install, ran vehicle for a few minutes and all sounded fine, no audible leaks, no faults and very smooth idle. I then took about a 40 mile drive. Drove it like normal then pulled up to a stop sign with wide open road in front. Hit WOT and what a kick, I knew for sure all was working. Enjoyed the sounds and the apparent feel in the seat.Tried a couple of full throttle runs... No, I did not exceed posted limits, but it seems to get there very smoothly. I had a full tank when I started and checked overall mileage, even with the hard runs looks like gas mileage is perhaps a touch better than prior. Time will tell. At 70 MPH ran perfect and I do commute so we will see if any change in MPG.. Test run showed a percentage better, in my opinion, than prior setup. Computer accepted the new setup without a hitch.Again my opinion but it seemed less lag and a bit more kick in the pants. Thanks K&N, I have used several of your products over the years, they have all worked well. Richard

Richard Felix
Hot Springs Village, Arkansas
Wednesday, June 6, 2018 - Part 77-2575KS
I am a die hard K&N product fan but unfortunately this kit and the typhoon kit doesnt fit my 2017 Explorer 3.5 ltr engine and they are in the process of figuring what to do and I've sent pictures to show them so it's a waiting game now otherwise I love the product...

Charles Delabretonne
Spring, Texas
Tuesday, January 16, 2018 - Part 77-2575KS
I love it.

Yldefonso Gonzales
San Marcos, California