Air and Fuel› Air Cleaners, Filters, Intakes and Components

K&N Engineering

BMW

$241.36

SKU: K001 57-0439

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Beginner — under 30 min

Description

The K&N 57-0439 is a performance air intake kit designed to optimize airflow and enhance engine performance. It replaces the entire factory air intake system, allowing for increased horsepower and improved throttle response. The kit features a larger, washable cotton gauze air filter that can capture more dirt and extend service life, requiring cleaning only after up to 100,000 miles of use.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandK&N Engineering
Part NumberK001 57-0439

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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