MMR Performance High-Flow Panel Air Filter - Blue Cotton Gauze, Drop-In Washable Reusable Intake Upgrade for BMW B58 M140i M240i 340i 440i F20 F21 F22 F23 F30 F31 F32 F36 OEM Airbox xDrive

Unlock effortless airflow and sharper response for your BMW B58. This high-flow, blue cotton performance panel element is a direct replacement for the standard filter, transforming the way your turbo six breathes while keeping the factory look and fit. No remap required, no fuss. Simply swap into the stock air filter housing and enjoy a cleaner, freer intake path.

Developed to deliver low restriction and outstanding dust capture, the multi-layer pleated cotton media allows your engine to draw air more easily, helping improve throttle pickup and adding a deeper, more purposeful induction tone under load. It is fully serviceable and reusable, so you can clean and refit it for the life of the vehicle, cutting waste and long-term running costs.

Perfect for B58-powered BMWs

Designed for BMW models with the 3.0 turbocharged straight-six B58 engine, including:

• BMW 1 Series M140i
• BMW 2 Series M240i
• BMW 3 Series 340i
• BMW 4 Series 440i

Compatible with the factory airbox on applicable F‑chassis variants, including rear-wheel drive and xDrive where fitted.

Why enthusiasts choose this upgrade

• High-flow cotton media for enhanced intake efficiency
• Reusable and washable element for lifetime use
• Direct drop-in fit to the standard air filter housing
• Improved responsiveness and a sportier intake sound
• Quality construction designed to balance airflow with excellent filtration

We use this filter ourselves and have installed it for numerous customers. Feedback is consistently positive, praising the crisper feel on the road and the richer induction note, all while retaining OEM refinement.

Fitting and maintenance

Installation is a simple home job using basic tools. For professional fitting, contact MJ Modifications in Warwickshire for a quote at info@mjmodifications.co.uk. To maintain performance, inspect periodically and clean as required using a suitable cotton filter cleaning kit, then re-oil if necessary.

Search-friendly highlights

• Drop-in intake filter upgrade for BMW B58
• Reusable sports panel element for factory airbox
• High-flow cotton gauze style media for improved breathing
• Fits M140i, M240i, 340i, 440i
• Enhanced induction note and throttle response

Give your B58 the airflow it deserves with a simple, proven upgrade that looks stock, sounds right and lasts for years.