K&N 77-2557KP

Intake Kits > Performance Intake Kit
List Price: $612.17
Your Price: USD $337.99

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Built for performance and show utilizing the highest quality components, the K&N 77 Series High-Flow Performance Air Intake is a free-flowing mandrel-bent aluminum tube induction system designed for Trucks and Sport Utility Vehicles. 77-Series air intakes come with K&N's Million Mile Limited Warranty. K&N intake systems replace your vehicle's restrictive factory air filter and air intake housing. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your vehicle's engine to inhale a larger amount of air than the OEM air filter assembly. More air means more usable power and acceleration throughout the engine's RPM range. The filters on these kits are washable and reusable. Most of our intake kits are relatively easy to install using tools commonly available (see installation instructions). Some 77 Series Air Intakes are not legal for 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 vehicle parts search for specific CARB status.

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

Product Specifications

Estimated Horsepower Gain9.31 HP @ 4724 RPM
Air Filter ColorRed
Air Filter Height8 in (203 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-34
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishPolished
Intake Pipe MaterialAluminum
Product Box Height12.5 in (318 mm)
Product Box Length18.25 in (464 mm)
Product Box Width18.25 in (464 mm)
Product Style77 Series Kits
Replacement FilterRF-1020
Street Legal In All US StatesSee Application Link Above
TUV Approved (Europe)No
Weight12.7 lb (5.7 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Customer Feedback

Be the first to review part 77-2557KP
Ordered for my ford f150 because i like the way it's made, found I can now buy it in my local walmart store.

I didnt think it would make that much of a difference. My 02 Ford F150 4.6 has been having issues with power and it was dogging out on me. I went for a drive after i installed it and WOW It sounds so mean and the power is unbelievable. I wasnt expecting that much of an increase. Ill have to drive it more to see if the problems went away. I struggle up the same hill every day on the way home from work when i just took it out i accelerated faster up the hill than i did before on flat ground i fell in love with my truck all over again. Thank you K&N you guys are amazing I am forever grateful i am going to tell everyone i know about your product.

Kaych Opheim
Helena, MO
I love this K&N Air Intake. Look's so much better than the stock Ford Intake that came on my 2006 F150 STX. The sound is Awesome I did not think i would be able to tell a difference in the sound but along with my FlowMaster Exhaust you can tell it's not stock, it sounds great, when you step on it you can hear the Air being sucked into the Intake. On MPG, I've been using it for about 2 week's now, I fueled up and almost run it all out before installing the new Intake, then fueled up again after it was installed and drove the same way back and forward to work. I can tell some change in MPG, it really does help. There is also a change in the  Throttle response and HorsePower. Installing this Intake is easy to do, and when you open the hood, It's the first thing that hit's your eye's. The only thing i had a problem with is the Intake tube had a spot on it about the size of a half dollar that looked like it had sand paper took to it, almost like the tube had been used before. But luckily it was on the bottom of the tube so when installed you never see it, so no big deal really. All in all i give this K&N Intake a 5 out of 5, I love it.

Cedar Bluff, Alabama