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K&N 77-2577KTK 5.0 out of 5 stars 1 Customer Review
Intake Kits > Performance Intake Kit

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77-2577KTK
 
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The K&N 77-2577KTK high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Ford F350 Super Duty 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 77-2577KTK 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 intake tube has an attractive textured black powder-coat finish that's made to last and it accommodates the factory mass air sensor. 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, ratchet set and some 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 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.


Product Reviews      Review part 77-2577KTK

 I can already see the increase of power. Should have dotten soomer. I haqve been running a K&N filter in the stock breather,
Jon Cattabriga, enfield nh