K&N High-Flow Washable Panel Air Filter for BMW 1 Series Diesel (F20/F21) 2011+, Drop-In OEM Replacement, Reusable Performance Upgrade

K&N High-Flow Washable Panel Air Filter for BMW 1 Series Diesel (F20/F21) 2011+, Drop-In OEM Replacement, Reusable Performance Upgrade

£63.89
£63.89
Sold out
Tax included. Shipping calculated at checkout.

Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

K&N Performance Air Filter for BMW 1 Series F20/F21 Diesel 2011 onwards is the simple, proven performance upgrade that lets your BMW breathe better, respond faster and stay protected. This high-flow, washable and reusable panel air filter drops straight into the factory air box, delivering increased airflow with exceptional filtration. Designed to boost horsepower and improve acceleration, it is the last air filter your 1 Series diesel will ever need thanks to K&N’s famous Million-Mile Limited Warranty.

Why choose a K&N performance air filter for your BMW 1 Series diesel

  • Direct-fit, drop-in replacement for the OEM air filter in the F20/F21 1 Series diesel platform
  • High airflow with outstanding filtration to help increase horsepower and improve throttle response
  • Washable and reusable cotton media for long-term, low-cost ownership
  • Up to 50,000 miles between cleanings depending on driving conditions
  • Works with original equipment manufacturer electronics and factory air box
  • Will not void vehicle warranty
  • Backed by K&N’s Million-Mile Limited Warranty

At Nforcd we have fitted and used these filters extensively on BMW diesel platforms and customer feedback is consistently positive: better engine breathing, a sharper pedal feel and the convenience of a reusable filter that saves money over time. It is a quick, reliable upgrade for everyday driving, fast road use and long-distance commuting.

Fitment

BMW 1 Series F20/F21 diesel models, 2011 onwards, using the standard factory air box. If you are unsure about compatibility, contact our team and we will be happy to help.

Installation and support

Simple DIY installation in minutes. Prefer professional fitting? Nforcd offers expert installation at our Warwickshire workshop. Request a quote at Sales@nforcd.com.

Maintenance

Clean and re-oil with a K&N service kit when required. Reusable design means you buy once and reuse for the life of the vehicle, reducing waste and long-term running costs.

Search-friendly terms

BMW 1 Series diesel performance air filter F20 F21, K&N panel air filter BMW 1 Series diesel, K&N filter upgrade BMW F20, F21 diesel air filter UK, reusable washable air filter BMW 1 Series, high flow air filter BMW diesel, drop-in performance filter BMW 1 Series 2011 on, BMW F20 F21 K&N performance filter, replacement air filter BMW 1 Series diesel, performance upgrade BMW diesel UK, K&N 1 Series diesel filter Warwickshire, buy K&N air filter BMW UK.