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K&N 57I-1000 Performance Intake Kit

57i Series Kits > Performance Intake Kit
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.7 out of 5 stars   3 Customer Reviews
  • 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 in (152 mm)
Air Filter Large End Diameter5.438 in (138 mm)
Air Filter MaterialCotton Gauze
Air Filter Outlet ShapeRound
Base Outside Diameter5.375 in (137 mm)
California RestrictedNot legal for sale or use in California
Clamp MaterialSteel
Clamp StyleRegular
Clamps Included3
Couplers Included1
Flange Inside Diameter4 in (102 mm)
Flange Length0.625 in (16 mm)
Flange TypeCentered
Height6 in (152 mm)
Intake Pipe Color / FinishBlack
Intake Pipe MaterialHigh-Density Polyethylene
Product Box Height12 in (305 mm)
Product Box Length18 in (457 mm)
Product Box Width12 in (305 mm)
Product Style57i Series International Kits
Replacement FilterRC-4550
Street Legal In All US States No
Top Outside Diameter4.5 in (114 mm)
Top StyleChrome
TUV Approved (Europe)No
TypeGen II
Weight6.5 lb (3 kg)

K&N 57I-1000 Performance Intake Kit Product Reviews

Thursday, April 14, 2016 - Part 57I-1000
This induction is almost everything you'd want it to be. Its well made, using quality materials, its really easy to fit (only took me 30mins) & its pretty good value for money. It also gives my 3 series BMW a slightly louder and better quality exhaust note, whilst providing albeit small performance gains. The only thing I'm not so keen on, is the design specifically relating to my model of car. The heat shield as is currently configured doesn't utilize the incoming flow of air from the existing air scoops in the grill. It seems silly to me to not take advantage of a constant supply of cold air coming into the engine bay. It also now means that the fexi hose coming of scoops is distributing dust & debris from the road all over the inside of the engine bay. Now I know there is always a trade off in some aspect of fitting after market performance parts, and the benefits of having the filter (in my opinion) are worth it. It's still annoying to see that it could be better. 4/5 Stars.

Alex Lees
Eastleigh, Hampshire
Friday, March 25, 2016 - Part 57I-1000
Brilliant sound and acceleration difference. Quite easy for a beginner to install with good instructions.

Bhavesh Sampat
Milton Keynes, United Kingdom
Monday, June 29, 2015 - Part 57I-1000
Excellent product as usual fits great, easy install, and a happy customer.

All In Garage
Bluffton, South Carolina