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K&N Cold Air Intake Systems for BMW 523i

BMW 523i Performance Cold Air Intakes

Buy now from the K&N Store and get a 100% Money Back Guarantee on any cold air intake system!
  • Designed to increase power and torque
  • K&N Million Mile Limited Warranty®
  • Replaces restrictive factory air intake system
  • Easy to install performance, usually in 90 minutes or less
Add more horsepower to your BMW 523i with a K&N cold air intake system. K&N BMW 523i cold air intakes are easy to install and add power & acceleration while protecting the vehicle's engine.
K&N Cold Air Intake Systems
Vehicle DescriptionPart Number Product Image
2000 BMW 523i 2.5L L6 F/I - to 9/00
Automotive
2000 BMW 523i 2.5L Cold Air Intake
57-0439 Product Info 57-0439 523i 57i Air Induction Kit
1999 BMW 523i 2.5L L6 F/I - All
Automotive
1999 BMW 523i 2.5L Cold Air Intake
57-0439 Product Info 57-0439 523i 57i Air Induction Kit
1998 BMW 523i 2.5L L6 F/I - from 9/98
Automotive
1998 BMW 523i 2.5L Cold Air Intake
57-0439 Product Info 57-0439 523i 57i Air Induction Kit

Need help finding the right BMW 523i cold air intake?

K&N cold air intakes for the BMW 523i or any other vehicle can be found using K&N's Search by Vehicle tool. By providing a year, make, model and engine size, you will find all K&N performance upgrades available for that vehicle.

K&N also provides a Search By Vin tool which allows you to use the unique vehicle identification number located on the vehicle to find K&N performance upgrades available for your BMW 523i or other vehicle.