MST Performance Cold Air Intake (Open-Type) – BMW M240i / M340i / M440i (G20/G42/G22) B58

OVERVIEW

The MST Performance open-type Cold Air Intake replaces the factory airbox on the G-chassis B58 M240i, M340i and M440i with a 4" enlarged intake pipe and a large 4" high-flow dry cone filter mounted behind a powder-coated heat shield, feeding the turbo cooler air for stronger response and an aggressive induction note.

SPECS

• 4" enlarged black powder-coated intake pipe
• 4" high-flow dry cone air filter — clean ~20,000 km, replace ~60,000 km
• Black powder-coated heat shield
• Claimed ~+20 hp / +20 Nm; direct fit, no tune required

PARTS INCLUDED

• 4" intake pipe
• 4" high-flow dry cone filter
• Heat shield
• Mounting hardware

TECH RESOURCES

• Direct bolt-on — no tune required
• Also available as a sealed-airbox version: MST Cold Air Intake (Sealed Airbox).
• Not compatible with 2025+ B58 Gen3 engines
• Not CARB compliant; for off-road / racing use only
• Professional installation recommended

PART NUMBER

• BW-B5802

VEHICLE APPLICATIONS