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MSRP $494.99 44.8% Off
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K&N 63-2581 Air Intake

63 Series Aircharger Kits > Performance Intake Kit
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   47 Customer Reviews
  • Guaranteed horsepower gain
  • Designed to improve throttle response and engine sound
  • Free-flowing high density polyethylene 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
  • K&N Million Mile Limited Warranty
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]

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.

K&N 63-2581 Air Intake Product Reviews

Tuesday, April 26, 2016 - Part 63-2581
Easy to install and what a difference in the sound, it's GREAT! I love it! I have had K&N products on all my vehicles for the last 20 years. Keep up the good work guys.

Rick Hendricks
Buffalo, New York
Tuesday, March 22, 2016 - Part 63-2581
Easy to install. Mid range improvement.

Mark W
Monday, February 22, 2016 - Part 63-2581
Perfect experience of order.

Quebec, Canada
Tuesday, November 17, 2015 - Part 63-2581
Easy to install. Not much gas mileage gain. Git up and go is improved.

Lance Nitschke
North Dakoa
Monday, November 02, 2015 - Part 63-2581
Fantastic fuel mileage increase was outstanding and horse power is crisp and smooth.

Thursday, October 01, 2015 - Part 63-2581
Not sure about the quick disconnect connection but have mechanic friends to ask. Easy install and now I need a different muffler to unplug the exhaust I am getting at least 1 mile more per gallon.

Jim Roe
St. Joseph, Michigan
Sunday, September 27, 2015 - Part 63-2581
Great purchase if you are looking for deeper sound out of your engine and additional horsepower. You will notice it immediately. Have not noticed a increase in MPG but have only had it on for about 2 weeks.