K&N Washable Reusable Panel Air Filter for BMW 1 Series 120i F20/F21 (2015–05/2016) – OEM-Size Drop-In Performance Engine/Intake Filter – Cotton Gauze Sport Induction Upgrade, Lifetime Serviceable for Stock Airbox

Give your BMW 1 Series 120i the breathing upgrade it deserves with this premium reusable panel insert. Designed to reduce restriction and let your engine inhale more efficiently, this direct-fit cotton gauze element drops straight into the factory air box and delivers a crisper pedal feel, stronger mid-range pull and a smoother drive without any mapping or hardware changes.

Why it belongs on your 120i

• Freer flowing intake path for improved response and more eager acceleration
• Advanced multi-layer cotton media balances high airflow with excellent dust capture
• Serviceable design - simply wash and re-oil, then refit for long-term savings
• Long service intervals depending on driving conditions, reducing waste and costs
• Direct-fit into the stock airbox - no cutting, drilling or calibration needed
• Compatible with standard ECU and factory sensors
• Will not invalidate your vehicle warranty
• Backed by K&N’s Million-Mile Limited Warranty

Real-world results

We have installed this filter on customer 1 Series cars in our workshop and the feedback has been consistently positive. Owners report sharper throttle pick-up, a cleaner rev build and the convenience of a serviceable filter that pays for itself over time. Fitment quality is OE-level, and maintenance is quick and straightforward.

Fitment

BMW 1 Series 120i, F20 and F21, model years 2015 to May 2016. Three-door and five-door applications that use the factory airbox. Please check your registration year and airbox shape before ordering to confirm suitability.

Care and maintenance

When the element becomes dirty, clean and re-oil with an appropriate filter care kit, then refit. Depending on use, cleaning intervals can extend significantly compared with disposable paper elements, making this an eco-conscious and cost-effective upgrade.

Professional fitting

Want it installed by specialists? MJ Modifications in Warwickshire can fit this item and carry out a health check of your intake system. Request a fitting quote: info@mjmodifications.co.uk

What you receive

• 1 x reusable high-flow panel insert for BMW 1 Series 120i F20 F21

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