AIRTEC Motorsport B58 Oil Catch Can Kit for BMW M140i & M240i (F20 F21 F22 F23) - PCV Breather Oil Separator, Bolt-On Fit

BMW M140i and M240i B58 Crankcase Vapour Separator Catch Tank

Keep your turbocharged straight six running clean and consistent with this dedicated engine breather canister for the B58 platform. Designed for the M140i and M240i chassis codes F20 F21 F22 F23, this oil mist separator traps blow-by before it reaches the inlet tract to help maintain smooth airflow, protect intake valves and support reliable performance on track and fast road.

We run this unit on our own B58 development car and it has been faultless. Customers report tidy fitment, an OE look in the bay and noticeably cleaner service intervals. If you are chasing a tidy bay, long term reliability and reduced oily residue in the induction path, this is the proven solution.

Why your B58 benefits from a breather catch tank

• Direct injection engines can suffer from valve coking due to oil vapour recirculation. This can hamper airflow and dull throttle response over time.
• The separator captures oil mist and contaminants from the PCV side to help keep the manifold and ports cleaner for longer.
• Cleaner intake components support consistent power delivery and reduce the need for frequent de-coking maintenance.

Vehicle specific design for F2x B58

• Tailored kit for BMW M140i and M240i with the B58 engine across F20 F21 F22 F23 platforms.
• Laser cut bracket with a stealthy matt black powder coated finish for a factory style install.
• High quality canister with internal baffling and dipstick for efficient separation and quick level checks.
• Quick release body for simple draining and routine maintenance.
• Supplied complete with model specific hoses, fixtures, fittings and a comprehensive installation guide.

Fitment note: Not compatible with the standard airbox. Intended for cars running most aftermarket induction kits that utilise a replacement heat shield style intake.

Highlights

• Direct fit B58 breather catch tank for M140i and M240i
• PCV side oil mist control to reduce blow-by into the inlet
• Discreet black finish to complement the OEM engine bay
• All hardware included plus full step by step fitting guide
• Ideal for fast road and track day use

Professional fitting

Want it fitted by specialists who know these cars inside out? Book installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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