63-2581 Image

K&N 63-2581 Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5 4.7 out of 5 stars 40 Customer Reviews
63 Series Aircharger Kits > Performance Intake Kit

List Price: $484.92
Your Price: USD $266.99

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The K&N AirCharger 63-2581 air intake system replaces 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 factory air filter assembly. More air means more usable power and acceleration throughout the engine’s RPM range. The 63-2581 air intake comes with a chrome topped K&N high-flow air filter inside a heat shield that mounts to the lower air box. The position of the air filter inside the heat shield helps direct cooler, denser air into the custom molded intake for a guaranteed power gain. The oversized 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 requiring only a screwdriver and several wrenches. This air intake cannot be sold in California. It is not legal for use in California or other states adopting California emission standards.

[More Information on K&N AirCharger Air Intakes]
  • Guaranteed horsepower gain
  • Designed to improve throttle response and engine sound
  • Free-flowing high density polyethylene tube
  • Replaces entire factory air intake system
  • Not legal for highway use in states adopting California emission regulations
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • K&N Million Mile Limited Warranty
Video Installation Video

Product Specifications

Estimated Horsepower Gain12.05 HP @ 5304 RPM
Air Filter ColorRed
Air Filter Height6 in (152 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
California RestrictedNot legal for sale or use in California
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12.5 in (318 mm)
Product Box Length22.25 in (565 mm)
Product Box Width14.25 in (362 mm)
Product Style63 Series Aircharger Kits
Replacement FilterRC-5173
Street Legal In All US States No
TUV Approved (Europe)No
Weight10.6 lb (4.8 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Product Reviews

  I'm very pleased with this product. The moment I installed this intake on my 2012 Ford F-150, I could feel and defiantly hear the difference. My truck sounds like a beast and the gas mileage is significantly better. I'm glad I bought it.
Randy Acosta Katy, Texas
  Well, I too purchased this for my 2013 F-150 5.0 Coyote engine, it took about 30 mins. to install hardest part was finding a star driver that fir the MAP sensor screws as not tools are sent in the kit Started up my truck and didn't notice anything really... Really quiet, well I washed my hands and decided to take it for a drive and see whats doing. As soon as i backed up and gave it some throttle I heard a nice throaty deep roar I was pleased, and surprised. I turned the corner and jumped on the highway, as soon as I cleared the cars I smashed my pedal down and WOAHHHHHH  NICE My truck proceeded to make a very loud roar picking up speed whilst other drivers all turned their heads to see what the hell was speeding by. Great purchase, I do not know if I gained hp, not a Dyno guy... I did see some improvement in MPG im at 18.4 I was 17.4. Hoever with the new boost in sound I find myself smashing down on the gas A LOT because its fun now so I am sure mpg will vary because of it. Conclusion: If you want your Truck to sound SEXY and can afford $266 bucks? GET IT You will be happy. If you want better mileage? Don't buy this..
Marco Nashua NH
  This item isnt great at all..I have had it since December and I think I get worse miles on my truck with it installed. Only thing good about it is that my truck sounds like it has power but all in all it doesn't. Kind of wasted my money on this.
Tony Housholder Willoughbh, Ohio
  Order, delivery, and install went very well
Gerald Bevel Alabama
  It is the best thing I have ever done to my Ford F150. It runs better, sounds great and better gas mileage.
Norman Watts Florida
  Very easy to install, great product, so far very impressed.
Sdoc Georgia
  Fast delivery, Everything was as described. Easy to install. Does feel like there was a power increase. It was louder than I was expecting. I would have gone for the unit with less horsepower if I would have known it was this loud. I guess to get the extra horse power you will lose something.
David Boswell Dallas,Texas