Osprey BMW B58 F-Series Engine Air Filter – Washable Reusable Drop-In Panel for OEM/Stock Airbox | Fits M140i M240i 340i 440i (F20

Osprey B58 F-Series Intake Element for BMW M140i, M240i, 340i, 440i

Give your B58 turbo six the airflow it deserves. This Osprey serviceable intake element is a straight swap for the factory paper insert, sitting neatly inside the standard air box on BMW F-Series M140i, M240i, 340i and 440i. The reinforced media and rigid silicon frame resist collapse, reduce restriction and keep airflow stable, delivering crisp throttle response and strong breathing without compromising fit or refinement. Clean, refit and go. Built to go well past 50,000 miles when maintained.

Why enthusiasts choose it

• Direct replacement for the stock air panel in the OEM air box. No cutting, no adaptation.
• Washable, reusable and cost effective compared with disposable filters over the long term.
• Sturdy silicon skeleton with a reinforced element for shape retention under load and under boost.
• Engineered to reduce intake restriction on B58 engines, supporting improved response and power potential.
• Durable construction for extended service intervals and dependable filtration.
• Ideal for daily use, spirited road driving and tuned setups that retain the factory air box.
• Simple DIY maintenance with basic tools and cleaning routine.

Compatibility

Designed for BMW F-Series models equipped with the B58 engine and the standard air box:

• BMW M140i
• BMW M240i
• BMW 340i
• BMW 440i

Real-world results

We run this Osprey intake element on our own B58 shop cars and the feedback from our customers has been consistently positive. Fitment is spot on, quality is excellent and the improved breathing complements both stock and mapped vehicles while keeping the original air box and OE look.

Fitting and support

Installation is quick and straightforward at home. Prefer a professional install or a health check at the same time? Book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

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