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Intake Kits > Performance Intake Kit

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77-2577KTK
 
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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). This 77 Series Air Intake cannot be sold in California. It is not legal for use in California or other states adopting California emission standards. Check the K&N catalog or website vehicle parts search for specific CARB status.

[More Information on 77 Series Air Intakes]
  • 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®
Available Information
Installation Instruction Sheet
77-2577KTK Vehicle Applications
Dyno Chart - 2008 Ford F250 5.4L - 13.93HP Increase
News Story - Extremely Popular Ford F250 Super Duty Truck Achieves Nearly 14 More Horsepower With K&N Air Intake


Part 77-2577KTK Product Specifications
Product Style: 77 Series Kits
Estimated Horsepower Gain: 13.93 HP @ 4077 RPM
Replacement Filter: RC-5173
Air Filter Color: Red
Air Filter Outlet Shape: Round
Street Legal In All US States: No
Air Filter Height: 6 in (152 mm)
TUV Approved (Europe): No
Air Filter Material: Cotton Gauze
Clamps Included: 5
Clamp Material: Stainless Steel
Clamp Style: Regular
Couplers Included: 2
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Intake Pipe Color / Finish: Textured Black
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Vacuum Tubing Included: No
Air Filter Large End Diameter: 7.5 in (191 mm)
California Restricted: Not legal for sale or use in California
Weight: 12.2 lb (5.5 kg)
Product Box Length: 35.5 in (902 mm)
Product Box Width: 13.25 in (337 mm)
Product Box Height: 10.5 in (267 mm)


Horsepower gains based on similar vehicle dynamometer test. Results will vary.


Customer Feedback      Be the first to review part 77-2577KTK

I love this air filter, the way it makes my 2014 Ford Focus ST sound and perform is amazing. Can't thank my amazing girlfriend enough for getting me this, this past Father's Day. Awesome product.
Paul Waters, Houston, Texas
After straight piping and the K&N filter in my '05 Ford dually, I feel like a kid again. (can't tell if I'm getting better mileage cuz I can't seem to keep my foot out of it!)
Gary Runer, Santa Fe, New Mexico
THE ABOVE PART NUMBER MATCHES THE AIR FILTER I BOUGHT FOR MY 2012 F-150 FORD PICK UP. THE REASON I PURCHASED THE AIR FILTER WAS TO HOPEFULLY GET MORE MILES PER GALLON FUEL ECONOMY AND MAYBE A LITTLE MORE HORSE POWER. THIS WOULD BE VERY HELPFUL WHEN WE ARE PULLING OUR RV. RECENTLY WE TOOK THE RV TO MICHIGAN AND I REALLY DID NOT NOTICE ANY BETTER MPG OR POWER. I REALIZE IT MAY BE DIFFICULT TO NOTICE ANY IMPROVEMENT WHEN TOWING AN EXTRA 5000 LBS. I DO FEEL THAT THE AIR FILTER MAY PROVE TO HELP MPG AND POWER WHEN NOT TOWING-TIME WILL TELL! I ALSO PURCHASED A K&N AIR FILTER FOR MY 2013 HARLEY SOFT TAIL. THAT FILTER DOES SEEM TO PROVIDE BETTER REPONSE (ACCELERATION). I HAVE NOT CHECKED MY MPG VERY CLOSELY TO SEE IF THAT HAS IMPROVED. BOTH AIR FILTERS FIT VERY WELL AND WERE EASY TO INSTALL!
Gary Vander Lind, Ashtabula, Ohio