K&N 77-2550KP

Intake Kits > Performance Intake Kit
List Price: $577.16
Your Price: USD $317.99

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The K&N 77-2550KP high-flow performance air intake system is a free-flowing, mandrel-bent aluminum tube air induction system designed to fit some Ford F150 models. The restrictive factory air filter and air intake housing on your vehicle are replaced by this K&N air intake system which is designed to dramatically reduce air flow restriction as it smoothes and straightens air flow. The improved air flow allows your engine to inhale a larger amount of air than it would from the stock air intake. More air means more usable power and acceleration throughout your engine’s RPM range. The 77-2550KP 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 the intake tube into the engine’s throttle body for a guaranteed power gain. The intake tube has an attractive chrome-like finish that's made to last and it 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, ratchet set and some wrenches. Some K&N 77 series air intakes are not legal for sale or use in California and other states adopting California emission standards while others are CARB exempt and 50 state legal. Check the K&N catalog or website for vehicle applications and specific CARB status for each vehicle and air intake.

[More Information on K&N 77 Series Air Intake Systems]
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Free-flowing aluminum 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
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty

Product Specifications

Estimated Horsepower Gain6.15 HP @ 4567 RPM
Air Filter ColorRed
Air Filter Height6.5 in (165 mm)
Air Filter Large End Diameter7.5 in (191 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included5
Couplers Included2
Intake Pipe Color / FinishPolished
Intake Pipe MaterialAluminum
Product Box Height12.5 in (318 mm)
Product Box Length22.25 in (565 mm)
Product Box Width14.25 in (362 mm)
Product Style77 Series Kits
Replacement FilterRC-5107
Street Legal In All US StatesYes
TUV Approved (Europe)No
Weight9.9 lb (4.5 kg)
Horsepower gains based on similar vehicle dynamometer test. Results will vary.

Customer Feedback

Be the first to review part 77-2550KP
I love this K&N Air Intake. Look's so much better than the stock Ford Intake that came on my 2006 F150 STX. The sound is Awesome I did not think i would be able to tell a difference in the sound but along with my FlowMaster Exhaust you can tell it's not stock, it sounds great, when you step on it you can hear the Air being sucked into the Intake. On MPG, I've been using it for about 2 week's now, I fueled up and almost run it all out before installing the new Intake, then fueled up again after it was installed and drove the same way back and forward to work. I can tell some change in MPG, it really does help. There is also a change in the  Throttle response and HorsePower. Installing this Intake is easy to do, and when you open the hood, It's the first thing that hit's your eye's. The only thing i had a problem with is the Intake tube had a spot on it about the size of a half dollar that looked like it had sand paper took to it, almost like the tube had been used before. But luckily it was on the bottom of the tube so when installed you never see it, so no big deal really. All in all i give this K&N Intake a 5 out of 5, I love it.

Cedar Bluff, Alabama
Replaced the stock air filter on my 2001 Ford F150 with a K&N replacement filter. I noticed an immediate increase in responsiveness and from the first full tank an increase in my gas mileage. Since this is vehicle is used more around town the gas mileage is low but I increased by at about 2 MPG. Considering a standard air filter cost about $40 per replacement this will be a financial savings after two replacements. I typically replace the filter ever 8k miles since I do some dirt road travel, this will be an easy wash and reinstall. Highly recommend these filters, should have done this sooner. I have replaced the standard air filter on my 2014 Dodge Charger with the same results and will replace the filter on my daughters 2013 Ford Focus shortly.

Windham, New Hampshire
This product is the real deal. Directions were straight forward and install was the same. This was installed on a 2011 6.2L Ford F150 Platinum PU and just after installation took truck on a 2400 mile road trip which entailed mountain and desert driving with outside temperatures ranging from 65-109 degrees at average of 72 MPH. Realized a 1.5-2.0 mile per gallon increase in fuel efficiency depending on whether we were in the mountains or on the desert floor. There is definitely a increase in noise levels ( K&N acknowledges this in their information sheet) upon acceleration over stock since the process calls for removing the stock noise dampener box that is located just in front of the throttle body but quietens down to a very pleasant level when cruising. Throttle response time was quicker. I don't know about the so called HP increase since the test data shows the max HP gain was 27HP but this was a 52-5300 RPM and my max RPM was not over 3000 RPM and average was about 2200 RPM. I have used K&N Filters over the years but this is 1st time with the complete intake system.

Tom Carrens
Midland, Texas