K&N High-Flow Washable Reusable Panel Engine Air Filter for BMW 3 Series 325i E90/E91/E92/E93 2011-2013 - Drop-In OE/OEM Replacement Intake Filter for Stock Airbox, Performance Upgrade Cotton Gauze, E9x

K&N Washable Cotton Panel Filter Upgrade for BMW 3 Series 325i E90 E91 E92 E93 2011 to 2013

Give your 3 Series a simple intake refresh that you can feel on the road. This genuine K&N serviceable panel filter drops straight into the stock airbox on BMW 325i models from 2011 to 2013 and delivers freer breathing, crisper pedal response and a more engaging induction note while maintaining excellent engine protection. It is a cost-effective, reusable alternative to disposable paper elements and a proven upgrade for E9x platforms.

• Direct swap for the factory filter element. No remap or cutting required.
• High-flow oiled cotton media promotes improved airflow efficiency and smooth acceleration.
• Multi-layer filtration for strong engine protection and reliable MAF sensor compatibility.
• Washable and reusable to reduce maintenance costs over the life of the car.
• Extended service intervals, typically up to 50,000 miles between cleans depending on driving conditions.
• Designed to work seamlessly with the original BMW airbox and electronics.
• Backed by K&N’s famous Million Mile Limited Warranty.

Why we rate it

We run these filters in our own cars and customer vehicles because they offer instant gains in drivability without compromising refinement. Owners consistently report smoother pull through the rev range and a richer intake sound, all while keeping factory manners. If you want a quick, reversible upgrade that saves money over time, this K&N cotton gauze panel filter is a smart choice.

Compatibility

BMW 3 Series 325i 2011, 2012, 2013

Chassis: E90 Saloon, E91 Touring, E92 Coupe, E93 Convertible

Engine: 325i petrol with standard OE airbox

Fitting and care

Simple DIY install in minutes with basic hand tools. Clean and re-oil with an appropriate K&N service kit when required. For professional installation, MJ Modifications in Warwickshire can help. Request a fitting quote at info@mjmodifications.co.uk.

In the box

1 x genuine K&N reusable cotton panel filter for BMW 3 Series 325i E90 E91 E92 E93 2011 to 2013.

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