SKU: 97293363552

K&N Filtercharger Injection Performance Kit (57-2531)

Sale price$165.60 Regular price$184.00
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

K&N Filtercharger Injection Performance Kit (57-2531)The K&N 57 2531 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Ford 250 and 350 models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your Ford'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 57 2531 air intake

The K&N 57-2531 FIPK air intake system replaces the restrictive factory air filter and air intake housing in some Ford 250 and 350 models. K&N intakes are designed to dramatically reduce intake restriction as they smooth and straighten air flow. This allows your Ford'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 57-2531 air intake comes with a K&N high-flow air filter and a heat shield that installs into the lower air cleaner assembly. Air is directed through an aerodynamically engineered intake tube into the engine's throttle body for a guaranteed power gain. The new air intake system accommodates the factory air temperature sensor and the air filter restriction gage. 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 the existing factory mounting points. The tools needed are a screwdriver, 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.

Features:

  • Guaranteed to increase horsepower and improve acceleration
  • Custom designed and engineered for each application
  • Works with OEM computer system
  • Includes the world's best air filter, the K&N filter
  • Easy to install
  • Up to 100,000 miles between servicing
  • Million Mile limited warranty

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 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 and a couple of replacement silicone crank case vent hoses. 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. 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 vehicle applications and specific CARB status for each vehicle and air intake.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 97293363552

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Reviewed in the United States on April 27, 2026
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LoveDogs
Dallas, US
★★★★★ 5
I love the metallic iridescent!
Why did you pick this product vs others?: I love the color and the feel but the sizing is wonky. I’m a perfect 7.5. The 7 wears like a 6-6.5 and the 8 is just a little too big. I’m keeping my 7 in the blue and I have a pair in wine/purple in 8 from a few years ago. I just won’t be running a mile in them anytime soon! LOL I love the look!
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Reviewed in the United States on June 30, 2025
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Renee Wilson
New York, US
★★★★★ 5
Soft and comfortable
Great to slip on after being outside
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Reviewed in the United States on May 3, 2026
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J.C.
Massapequa, US
★★★★★ 3
Comfortable and good traction
After being impressed by a similar (but not identical) pair of cheap slippers at an AirBnB rental, I searched out these. I bought the 44-45 size for my size 10.5 (US) feet; according to the size chart, that's supposed to fit sizes 10.5 to 11. I find that they're quite large, so that they're loose on my bare feet. In crew socks, they're OK and I use them as house slippers. As advertised, they're soft, flexible, and springy. They grip the floor quite well. They're way better than the Crocs thong-style sandals I was using as bathroom sandals before. All in all, good value for money, but if you're using them as bathroom slippers and you have normal width feet, round the size down if you're at the small end of the stated range.
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Reviewed in the United States on October 22, 2024
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