K&N High-Flow Washable Engine Air Filter for BMW 3 Series 323i E90/E91/E92/E93 (2006-2011) - Performance Drop-In OEM Replacement

BMW 323i E90 E91 E92 E93 2006–2011 K&N Reusable Panel Filter Upgrade

Give your BMW 3 Series 323i the breath of fresh air it deserves with a genuine K&N cotton gauze panel element. This direct-fit insert slides straight into the standard airbox on E90 Saloon, E91 Touring, E92 Coupe and E93 Convertible models from 2006 to 2011, enhancing airflow for crisper throttle pick-up and a cleaner, more responsive drive without any mapping or cutting.

Why enthusiasts choose this K&N panel element

• High-flow cotton media designed for sharper response and smoother acceleration
• Serviceable and reusable filter element that can be cleaned and refitted
• Direct-fit in the factory airbox for an easy DIY install
• Up to 50,000 miles between services depending on conditions
• Works seamlessly with factory engine management and sensors
• Does not affect your manufacturer warranty
• Covered by K&N’s Million Mile Limited Warranty for street use

We use this upgrade in our own workshop BMWs and customer cars and it consistently delivers a more eager rev range, a subtle induction note and a quality, maintenance-friendly solution that outlasts disposable paper elements. It is a cost-effective intake enhancement for daily driving and spirited B-road runs alike.

Compatibility

BMW 3 Series 323i 2006–2011: E90 Saloon, E91 Touring, E92 Coupe, E93 Convertible. Direct-fit replacement panel element for the factory airbox.

Fitting service

Prefer professional installation? MJ Modifications in Warwickshire can fit this for you. Request a quote at info@mjmodifications.co.uk.

Care and maintenance

• Clean, re-oil and refit as required, with service intervals up to 50,000 miles depending on your driving environment
• Long-life solution that reduces waste compared to single-use paper filters

FAQs

Is tuning required? No. This panel element is designed to work with the standard airbox and factory ECU.

Will it fit my 323i? Yes, if you have a BMW 3 Series 323i E90, E91, E92 or E93 from 2006 to 2011 and a stock airbox.

Does this affect my warranty? No. K&N states it will not void your vehicle warranty.

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