B58 High Flow Replacement Intake Air Filter | BMW M240i/M340i/M440i
B58 High Flow Replacement Intake Air Filter | BMW M240i/M340i/M440i
B58 High Flow Replacement Intake Air Filter
Give your B58 the airflow it deserves—without changing the factory look. The CarBahn High Flow Replacement Air Filter is a direct drop-in upgrade for the OEM airbox, engineered to reduce restriction while maintaining strong filtration characteristics for confident daily driving and spirited pulls.
Why you’ll feel it
- Less restriction, more breathing room: Improved airflow through the stock airbox helps the turbo work more efficiently.
- OEM-style fitment: Drop-in design—no cutting, no tuning, no drama.
- Protection you can trust: Designed for performance airflow with filtration characteristics comparable to OEM intent.
- Smart, cost-effective upgrade: One of the simplest ways to support intake flow on a B58 build.
Installation
Installs in minutes in your factory airbox. Simply remove the old filter (paper & carbon filter) and drop in the new one.
Fitment
Fits B58-equipped BMW platforms listed on this product page, including: M240i / M340i / M440i / Z4 M40i (RWD & xDrive where applicable) across G20, G22, G26, G29, G42.
Product details
- CarBahn Part Number: CBB01-00-9306
- OEM Equivalent: 13-71-8-635-102
- Engine: B58
Tip: Pair this with your other CarBahn intake/cooling upgrades for a well-rounded, OEM+ flow path.