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57I-2503
$222.99 USD
MSRP $404.39 44.9% Off
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K&N 57I-2503

57i Series Kits > Performance Intake Kit
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Replaces entire factory air intake system
  • Washable and reusable lifetime air filter
  • K&N Million Mile Limited Warranty
  • Lasts up to 100,000 miles before service is required (depending on driving conditions)
  • Easy to install, usually in 90 minutes or less
K&N 57i Generation II Induction Kits are built primarily for European vehicles. They come with K&N's Million Mile Limited Warranty™. These intake kits use only non-metallic rotationally molded tubes that can reduce air temperature and decrease intake sound over a metal tube. Restriction can exist BETWEEN an air filter and the engine reducing the benefit of a K&N Air Filter alone. The weakest link in the airflow "chain" robs a vehicle of its natural horsepower. Often that weak point is the factory air path leading to the engine. K&N Air Intake Kits virtually eliminate air path restriction by replacing the air filter and the entire air path to the engine. The aerodynamically engineered tube drives a massive amount of air into an engine, which translates into POWER. 57i Intakes are not legal for use in California and other US States adopting California emission standards.

[More Information on K&N 57i Induction Systems]

Product Specifications

Air Filter ColorRed
Air Filter Height6.344 in (161 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
California RestrictedNot legal for sale or use in California
Clamp MaterialStainless Steel
Clamp StyleRegular
Clamps Included1
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12 in (305 mm)
Product Box Length22 in (559 mm)
Product Box Width14 in (356 mm)
Product Style57i Series International Kits
Replacement FilterRC-70031
Street Legal In All US States No
TUV Approved (Europe)No
TypeGen II
Weight5.2 lb (2.3 kg)

Customer Feedback

I used this filter as a special Air Cleaner replacement for a 1955 Ford Thunderbird that otherwise would normally have an Oil Bath air cleaner. There is a company that makes air filter cleaner replacements for the old Oil Bath cleaners and I upgraded the included air filter to a K&N Filter, and I am happy with the results. For anyone else that has a 1955 or 1956 Ford Thunderbird with the original Oil Bath cleaner, you can upgrade to an air filter cleaner assembly from (Brand Name) and then upgrade the air filter to a K&N. Hope this helps any fellow '55-'56 T-Bird owners.

Randy
San Diego, California
Installed the K&N 63-2587 on my 2014 Ford Fiesta ST. Installation only took about a half hour & was simple following the step by step instructions. The K&N cold air intake provides better throttle response along with a cool sound. For those who are worried about heat soak, its only s couple degrees higher than the restrictive factory air box. The only way you would get heat soak is if you were stuck in traffic in 100 degree weather. I live in New Jersey where it can get 90 plus degrees with high humidity & I have never had an issue. I have no regrets putting this on my car. It was money well spent. You can feel the difference as soon as you drive it.

Lou
Barnegat, New Jersey
I had bought an air filter for my 2007 V-6 Suzuki Grand Vitara. I just returned from a trip to Nevada. The trip is 2600 miles. We do this every Spring . We keep good records of the gas and mileage. With the new K&N air filter we got 4 miles to the gallon more. Also I had a lot more power. Good product. I have a 2010 Ford F-250 with a Diesel motor. Do you make a filter for this motor? One that will not have to have any modifications.

David Berry
Puyallup, Washington