K&N 57-2551

57 Series FIPK > Performance Intake Kit
List Price: $532.23
Your Price: USD $293.99

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The K&N 57-2551 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Lincoln Navigator models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your 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 57-2551 air intake comes with a chrome topped K&N high-flow air filter and a heat shield that installs into the previous air box space. Air is directed through an aerodynamically engineered intake tube into the engine’s throttle body for a guaranteed power gain. The tube accommodates the factory mass air sensor, air temperature sensor 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, ratchet set and several wrenches. K&N 57 Series FIPK's are street legal in all 50 US states and come with K&N's Million Mile Limited Warranty.

[More Information on K&N FIPK Air Intake Systems]
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
  • Free-flowing high density polyethylene tube
  • Replaces entire factory air intake system
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty

Product Specifications

Estimated Horsepower Gain15.48 HP @ 5049 RPM
Air Filter ColorRed
Air Filter Height8 in (203 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included6
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 Style57 Series FIPK
Replacement FilterRF-1020
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight10.3 lb (4.7 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Customer Feedback

Be the first to review part 57-2551
I purchased the K&N cold air intake setup No.57-3031-1 for my 2001 Chevy Silverado 2500HD 6.0 and I was surprised to see this thing actually works pretty darn well. So I had to buy one for my 2003 Navigator and they've made a big difference in hp and I also noticed I am getting better gas mileage in both vehicles. I would highly recommend these kits )

This product is outstanding. It is very easy to install and makes a noticeable improvement in the performance of my 2014 Lincoln Navigator L.

Thomas Masilla
Metairie, Louisiana
Installed in 2010 Lincoln Navigator. 20% increase in fuel economy and definitely notice an increase in power especially when towing. Super easy install. No check engine light issues. Great product. (57-2575)

North East