K&N Washable Reusable Performance Panel Engine Air Filter for BMW 440i 3.0 B58 (F32/F33/F36) 2016-on – OEM Replacement Drop-In, Fits Stock Airbox – Sports Intake/Induction Filter Upgrade for 4 Series Coupe, Gran Coupe & Convertible

K&N Cotton Gauze Performance Filter for BMW 4 Series 440i 2016 onward

Give your BMW 440i the breathing it deserves with a premium K&N serviceable intake filter element. This direct replacement slots into the factory air housing, delivering freer airflow, crisp throttle response and that unmistakable induction note, all while maintaining superb filtration to protect your engine. It is washable, reusable and backed by K&N’s famous Million-Mile Limited Warranty for long-term peace of mind.

Why this upgrade belongs on your 440i

• Free-flowing cotton media for improved engine breathing and sharper response
• Factory-spec dimensions for an easy swap with the original paper element
• Washable and reusable design reduces waste and long-term running costs
• Long service interval between cleans, depending on driving conditions
• No tuning required and fully compatible with factory electronics
• Ideal for the B58 3.0 turbo petrol platform and everyday fast-road use
• Durable construction designed for repeated cleaning and re-oiling

Real-world results

We have installed this filter on our own cars and many customer vehicles. Feedback is consistently positive, with owners reporting a more eager feel through the rev range, a smoother intake sound and the convenience of a lifetime, serviceable filter instead of throwaway paper inserts.

Compatibility

BMW 4 Series 440i 2016 onward, including Coupe F32, Convertible F33 and Gran Coupe F36 using the original air housing. If you are unsure about fit, contact us and we will help verify against your registration or VIN.

Fitting and support

Straightforward DIY swap with basic tools. Prefer a professional install or a health check at the same time? MJ Modifications offers fitting at our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

Care and maintenance

When service is due, clean and re-oil the filter using an appropriate K&N cleaning kit. Proper maintenance restores performance and extends the life of the element for years of use.

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