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57i Series Kits > Performance Intake Kit

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57I-2503
 
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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 57i Air Induction Kits]
  • Guaranteed to increase horsepower
  • Designed to improve throttle response and engine sound
  • Replaces entire factory air intake system
  • Not legal for highway use in US states adopting California emission regulations
  • Washable and reusable lifetime air filter
  • 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 Million Mile Limited Warranty®
Available Information
Installation Instruction Sheet
57I-2503 Vehicle Applications
News Story - New K&N Air Induction System Available for Ford Focus II


Part 57I-2503 Product Specifications
Product Style: 57i Series International Kits
Replacement Filter: RC-70031
Air Filter Color: Red
Air Filter Outlet Shape: Round
Street Legal In All US States: No
Air Filter Height: 6.344 in (161 mm)
TUV Approved (Europe): No
Air Filter Material: Cotton Gauze
Clamps Included: 1
Clamp Material: Stainless Steel
Clamp Style: Regular
Type: Gen II
Intake Pipe Color / Finish: Black
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Vacuum Tubing Included: No
California Restricted: Not legal for sale or use in California
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Weight: 5.2 lb (2.3 kg)
Product Box Length: 22 in (559 mm)
Product Box Width: 14 in (356 mm)
Product Box Height: 12 in (305 mm)



Customer Feedback      Be the first to review part 57I-2503

After straight piping and the K&N filter in my '05 Ford dually, I feel like a kid again. (can't tell if I'm getting better mileage cuz I can't seem to keep my foot out of it!)
Gary Runer, Santa Fe, New Mexico
THE ABOVE PART NUMBER MATCHES THE AIR FILTER I BOUGHT FOR MY 2012 F-150 FORD PICK UP. THE REASON I PURCHASED THE AIR FILTER WAS TO HOPEFULLY GET MORE MILES PER GALLON FUEL ECONOMY AND MAYBE A LITTLE MORE HORSE POWER. THIS WOULD BE VERY HELPFUL WHEN WE ARE PULLING OUR RV. RECENTLY WE TOOK THE RV TO MICHIGAN AND I REALLY DID NOT NOTICE ANY BETTER MPG OR POWER. I REALIZE IT MAY BE DIFFICULT TO NOTICE ANY IMPROVEMENT WHEN TOWING AN EXTRA 5000 LBS. I DO FEEL THAT THE AIR FILTER MAY PROVE TO HELP MPG AND POWER WHEN NOT TOWING-TIME WILL TELL! I ALSO PURCHASED A K&N AIR FILTER FOR MY 2013 HARLEY SOFT TAIL. THAT FILTER DOES SEEM TO PROVIDE BETTER REPONSE (ACCELERATION). I HAVE NOT CHECKED MY MPG VERY CLOSELY TO SEE IF THAT HAS IMPROVED. BOTH AIR FILTERS FIT VERY WELL AND WERE EASY TO INSTALL!
Gary Vander Lind, Ashtabula, Ohio
Simply the BEST on the market. I have used them in all of my vehicles. They are easy to install and you will immediately notice a boost in power and a small improvement in the gas mileage. Easy to clean and very durable. Spend the extra money and try one in your car or truck. You will save that money the first year in gasoline. I have them in my 2014 Mustang V6 Coupe and my 2013 Ford Explorer XLT V6.
Stuart Hill, Deming, New Mexico