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K&N 77-2585KS 5.0 out of 5 stars 2 Customer Reviews
Intake Kits > Performance Intake Kit

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77-2585KS
 
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The K&N 77-2585KS 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 77-2585KS air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs onto the lower airbox. 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, EVAP vent line and crank case vent hose. 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, pliers 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 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
77-2585KS Vehicle Applications
Dyno Chart - 2012 Ford F150 3.7L - 11.91HP Increase
News Story - 2012 & 2013 Ford F150 3.7L Owners Can Increase Horsepower with K&N Air Intake System


Part 77-2585KS Product Specifications
Product Style: 77 Series Kits
Estimated Horsepower Gain: 11.91 HP @ 5536 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: Silver
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Vacuum Tubing Included: Yes
California Restricted: Not legal for sale or use in California
Weight: 11 lb (5 kg)
Product Box Length: 22.25 in (565 mm)
Product Box Width: 14.25 in (362 mm)
Product Box Height: 12.5 in (318 mm)


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


Product Reviews      Review part 77-2585KS

 Had a mechanic friend put this in for me on my 2013 F-150. It took him just over an hour. Instantly saw better gas mileage. Went from averaging 15mpg to 18mpg which is the main reason I got it! Sounds good when you rev it too. Hard to gauge the horsepower increase but I'm sure it's there.
Travis, Florida
 Love this product.
Except for a shipping problem,left out attaching parts,I would recommend this product to anyone looking for better engine performance.
I picked up 2 MPG right off the bat.
Love the more muscular sound of the engine.
Lindo Rossi, Pennsylvania