MST Performance Cold Air Intake (Sealed Airbox) – BMW M240i / M340i / M440i (G42/G20/G22/G23/G26) B58

OVERVIEW

The MST Performance sealed-airbox Cold Air Intake feeds the G-chassis B58 M240i, M340i and M440i cooler air through a sealed HDPE airbox, 6" intake tube and large 152mm high-flow filter — a direct fit that needs no remap.

SPECS

• Sealed HDPE airbox isolates the filter from underhood heat
• 152mm high-flow washable filter
• 6" intake tube
• Claimed ~+14 hp / +29 Nm; direct fit, no tune required

PARTS INCLUDED

• Sealed HDPE airbox
• 152mm high-flow filter
• 6" intake tube
• Mounting hardware

TECH RESOURCES

• Direct bolt-on — no tune required
• Not compatible with 2025+ B58 Gen3 engines
• Professional installation recommended

PART NUMBER

• BW-B5811

VEHICLE APPLICATIONS