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K&N 57-2541 Air Intake

57 Series FIPK > Performance Air Intake System
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.7 out of 5 stars   33 Customer Reviews
  • 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)
  • Replaces entire factory air intake system
  • Free-flowing high density polyethylene tube
  • Easy to install, usually in 90 minutes or less
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty
The K&N 57-2541 Air Intake fits some Ford Expedition, Ford F150, Ford F150 Harley Davidson, Ford F150 Heritage, and Lincoln Navigator models. See vehicle applications link for details.
The K&N 57-2541 FIPK 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 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 57-2541 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 past the mass air sensor and 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 bypass valve, air temperature sensor and crank case vent hose. The oversized conical 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 the existing factory mounting points. The tools needed are a screwdriver, ratchet set and several wrenches in most cases. 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]

Product Specifications

Estimated Horsepower Gain13.12 HP @ 4562 RPM
Air Filter ColorRed
Air Filter Height9 in (229 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
CARB EO NumberD-269-37
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included8
Couplers Included3
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12.5 in (318 mm)
Product Box Length18.25 in (464 mm)
Product Box Width18.25 in (464 mm)
Product Style57 Series FIPK
Replacement FilterRC-5046
Street Legal In All US StatesYes
TUV Approved (Europe)No
TypeGen II
Weight13.3 lb (6.1 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

K&N 57-2541 Air Intake Product Reviews

Friday, March 17, 2017 - Part 57-2541
Quite impressed with the finished installation product. I'm sure I have gained HP and torque and pretty sure I've increased fuel economy. The instructions are lacking details/close-up pictures. Thankfully, YouTube had a similar installation to mine to help me figure out what hardware went where. I added split rubber hose to the inside of the shield where the MAS neck passes through to keep a rattle quieted. Overall - I'm pleased.

Larry Matthews
Durham, North Carolina
Monday, November 14, 2016 - Part 57-2541
This is the 4th K&N FIPK kit I have purchased and installed over the years. Sometimes, the gas mileage gets a small increase, sometimes the engine feels more responsive, but they always sound awesome, regardless. This time I installed the FIPK 57-2541 on my 2003 F150 5.4l. The kit was complete and well-engineered. The instructions were adequate, with the photos being a little hard to interpret at times, and the recommended tool list wasn't quite accurate, but only common tools are needed for any of the FIPK's I have installed. Definitely recommended. Nice job again, K&N

Jeff Johnson
Monday, October 31, 2016 - Part 57-2541
If you are looking to save gas, this is a good option.

Edgar Cardenas
Pearl City, Hawaii
Friday, September 30, 2016 - Part 57-2541
The product provides a huge boost to performance on my truck. The only reason I gave it 4 stars is because it took me 3-4 hours to put everything together. It holds true to the write up given by K&N. I have already recommended it to other people even.

John Key
Altoona, Georgia
Thursday, September 1, 2016 - Part 57-2541
Excellent product, installed it four days ago and noticed the increase in horsepower immediately. Very simple to install too.

Richard Camacho
Highland, California
Monday, July 4, 2016 - Part 57-2541
It was a fairly easy install. It replaced a (Brand Name) I had on the truck since 2002. Wanted one that had the box to isolate the filter from the warm air from engine. Seems like good quality. So far I'm happy with it.

James Moser
Memphis, Tennessee
Friday, July 1, 2016 - Part 57-2541
I had an imitation K&N intake prior to this one, and I have to say there is nothing like the real deal. You can feel and hear the power this thing gives my F150.

Anthony Alvarado
West Covina, California