K&N High-Flow Washable Reusable Panel Air Filter for BMW X4 (F26) xDrive35i/35iX & M40i 2014–2018, Direct-Fit Drop-In OEM Replacement Performance Filter

K&N High-Flow Washable Reusable Panel Air Filter for BMW X4 (F26) xDrive35i/35iX & M40i 2014–2018, Direct-Fit Drop-In OEM Replacement Performance Filter

£71.99
£71.99
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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 X4 F26 35iX and M40i 2014 to 2018

Unlock easy, reliable performance with the K&N high flow, washable and reusable replacement air filter for the BMW X4 F26. This direct-fit panel filter drops straight into the factory air box on the X4 35iX and X4 M40i models from 2014 to 2018, improving airflow for sharper throttle response and a crisper induction sound while maintaining exceptional filtration. No remap, no modifications, no hassle.

Key benefits

  • Designed to boost horsepower and rate of acceleration
  • High air flow with exceptional filtration for everyday road use
  • Washable and reusable to save money over disposable paper filters
  • Drop-in design that fits the original BMW air box, no cutting or drilling
  • Works with OEM vehicle electronics, no tuning required
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Will not void your vehicle warranty
  • Backed by K&N’s famous Million Mile Limited Warranty

Proven upgrade for your BMW X4

We have fitted and used these K&N filters on our own cars and customer vehicles, and feedback has been consistently positive. Owners choose this upgrade for the combination of improved drivability, quality construction and long-term value. It is a simple performance intake enhancement that keeps your OEM look and reliability.

Vehicle fitment

BMW X4 (F26) 35iX and M40i, model years 2014, 2015, 2016, 2017, 2018.

If you are unsure about compatibility, contact us and we will confirm fitment for your registration or VIN.

Installation and servicing

Installation is a quick, straightforward swap with basic tools. For professional fitting, we can help. Nforcd is based in Warwickshire and offers installation on request. Email Sales@nforcd.com for a quote.

When service time comes, simply clean and re-oil the filter as directed, refit and drive. No more throwaway paper filters.

Why buy from Nforcd

  • Specialists in performance car parts for BMW platforms
  • Tried-and-tested products we are happy to recommend
  • Friendly expert support before and after purchase

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