K&N High-Flow Washable Panel Air Filter for BMW 4 Series (F32/F33/F36) 420i 428i 2013-2015 - Reusable Drop-In OEM Replacement Performance Filter

K&N High-Flow Washable Panel Air Filter for BMW 4 Series (F32/F33/F36) 420i 428i 2013-2015 - Reusable Drop-In OEM Replacement Performance Filter

£63.89
£63.89
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K&N Performance Air Filter for BMW 4 Series 420i and 428i 2013 to 2015

Upgrade your BMW 4 Series with a genuine K&N high-flow performance air filter. This direct-fit panel filter drops straight into the factory air box on BMW 420i and 428i models from 2013 to 2015, delivering increased airflow for improved horsepower, sharper throttle response and smooth acceleration, while maintaining excellent engine protection. Washable and reusable, this K&N filter is designed for a lifetime of service and is backed by the famous K&N Million-Mile Limited Warranty.

Why choose a K&N performance air filter for your BMW 4 Series

  • Increases horsepower and improves rate of acceleration
  • High airflow with exceptional filtration using premium cotton media
  • Washable and reusable for the life of your vehicle
  • Up to 50,000 miles between cleanings depending on driving conditions
  • Drop-in replacement that fits the original BMW air box
  • Works with OEM vehicle electronics and sensors
  • Will not void your vehicle warranty
  • Backed by K&N’s Million-Mile Limited Warranty
  • Cost-effective upgrade that reduces waste versus disposable paper filters

Compatible BMW models

BMW 4 Series 420i and 428i, model years 2013, 2014 and 2015. Chassis: F32 Coupe, F33 Convertible, F36 Gran Coupe. Fits the standard factory air box.

Easy installation

Simple DIY fit. Remove the OEM paper element from the air box and drop in the K&N panel filter. No mapping or tuning required.

Professional fitting and support

Prefer us to fit it for you? Nforcd offers professional installation in Warwickshire. Request a fitting quote at Sales@nforcd.com.

Care and maintenance

When service is due, clean and re-oil with an appropriate K&N cleaning kit, then refit. Follow K&N’s care guidelines for best results.

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Order your K&N performance air filter today and give your BMW 4 Series the airflow it deserves.