K&N E-1550

Replacement Filters > Replacement Air Filter
List Price: $82.95
Your Price: USD $52.99

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K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for virtually every vehicle on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty™ and will be THE LAST AIR FILTER YOUR VEHICLE WILL EVER NEED.

[More Information on K&N Replacement Air Filters]
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®

Product Specifications

Air Filter ShapeRound
Filter MaterialCotton Gauze
Filter Re-Oiling Amount0.98 oz (29 ml)
Height1.875 in (48 mm)
Inner WireNo
Inside Diameter11.25 in (286 mm)
Outside Diameter13.25 in (337 mm)
Package Contents1 Air Filter
Package Quantity1
Product Box Height14.25 in (362 mm)
Product Box Length14.13 in (359 mm)
Product Box Width4.38 in (111 mm)
Product StyleRound Air Filter
Top Material/FinishNone
Top StyleOpen
Weight2 lb (0.9 kg)

Customer Feedback

Be the first to review part E-1550
1997 F350 8ft crew 7.5 gasser auto, single wheel, pulls 8000lbs of toy hauler and firewood. Only add is a B&M Trans Switch assembly and a multi quart trans pan and lil dents and scratches all the kids swear makes it faster now dad. The truck has 100k miles and we just installed new fuel pumps it needed she was still not acting like a big block motor, had torque but just wasent producing that big block  power we all expect. After installing the C.A.R.B. Approved K&N 52-2516 FIPK and replacing the stock muffler with a 2 chamber (Brand) we now feel it performs better than when it was new. The increased throttle response and report really WOWED us and she pulls like never before, we just couldn't be happier. DO NOT be the ********* we were and try the metric nut on the sae stud located on the filters chrome end, the sae nut is included and a quick check before wrenching is all it takes for a very clean and sturdy install. Check the 4 mass air flow adapter plate nuts and bolts the filter mounts to also, as we found they loosened up when the new assembly went through several heat cycles, once retightened they have remained in spec. We would indeed recommend this kit to any 460 gas drivers out there to spice up the performance and sound of their old ford. We are indeed considering the blue pre filter to spice up under the hood and prolong the filter use between servicing. What more can be said except, have you ordered it yet? no, why not. lol

Mad Marx
Ordered my filter for a 2010 Ford F-150 5.4L. Filter came in a few days, fit perfect. Been using K&N air and oil filters for some time now. It increased mpg by 2 and noticed better acceleration. Very happy. If you haven't tried K&N filters, order one and you be the Judge. Order-Arrive-Install-Enjoy.

Ephrata, PA
After reading other reviews I decided this was the intake for my 2013 Ford Focus with the 2.0L Duratec engine. Great sound and noticable performance, plus better fuel economy. The numbers don't lie. The provided dyno info was almost exact when I had put mine on the dyno. Nearly 10hp gain through the meat of the power curve.