K&N Air Intakes for the BMW 523i

BMW 523i Performance Air Intakes

Buy now from the K&N Store and get a 100% money back guarantee & free shipping on any air intake!
  • Designed to increase power and torque
  • K&N Million Mile Limited Warranty®
  • Replaces restrictive factory air intake system
  • Easy to install performance
Add more horsepower to your BMW 523i with a K&N air intake.
K&N Air Intakes
Vehicle DescriptionProductPart Number Product Image
2000 BMW 523i 2.5L L6 F/I - to 9/00
Automotive
57i Kit Air Intake 57-0439 Get Pricing and Buy 57-0439 523i 57i Kit Air Intake
1999 BMW 523i 2.5L L6 F/I - All
Automotive
57i Kit Air Intake 57-0439 Get Pricing and Buy 57-0439 523i 57i Kit Air Intake
1998 BMW 523i 2.5L L6 F/I - from 9/98
Automotive
57i Kit Air Intake 57-0439 Get Pricing and Buy 57-0439 523i 57i Kit Air Intake

K&N replacement air filters can help your car or truck run better.