K&N Performance Air Filter - 3-Series (E46) M3i Excl. CSL 2000-2005

Give your BMW E46 M3 sharper response and a richer induction note with this K&N high‑flow panel filter. It is a direct replacement for the factory paper element, sliding into the standard airbox in minutes for an instant breathing upgrade.

Compatible with: BMW M3 E46 2000 to 2005, S54 engine, coupe and convertible using the OEM airbox. Not suitable for the CSL carbon airbox.

Why this upgrade

• Improved airflow for crisper throttle and smoother acceleration
• Multi‑layer oiled cotton media for excellent dust capture and engine protection
• Serviceable design saves money over repeated paper filter changes
• Long service intervals – up to 50,000 miles between cleans depending on driving conditions
• Keeps the stock MAF and ECU happy – no mapping required
• Backed by K&N’s famous Million‑Mile Limited Warranty

We run this filter on our own cars and customer builds, and the feedback is consistently positive. Expect a subtle boost in intake sound, smooth power delivery and the peace of mind that comes with proven filtration.

Fitting and maintenance

Installation is straightforward. Open the factory airbox, lift out the old element and drop this panel in. A basic toolkit and a few minutes is all most owners need. When it is time to service, clean and re‑oil with a K&N care kit, then refit. Heavy use or dusty environments may require more frequent attention.

Professional installation

Prefer us to fit it for you? MJ Modifications offers professional installation in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote or to book a slot.

Popular searches to help you find this item

BMW M3 E46 panel filter, S54 intake filter, high flow air filter upgrade, reusable cotton gauze filter, oiled performance filter, lifetime air filter, direct replacement filter for OEM airbox, E46 M3 induction upgrade, BMW 3 Series M3 2000 2001 2002 2003 2004 2005 air filter, not for CSL, serviceable sports filter, UK performance parts.