BMW 540i Air Filter - Dinan High Flow Drop-in (2017-2023). A direct, reusable upgrade that improves airflow while maintaining excellent filtration.

Constructed with four layers of high-flow oiled cotton gauze, this Dinan filter reduces pressure drop, helping the engine breathe with less effort to support performance and efficiency. It installs in minutes, is washable for long-term use, and measures 270mm x 218mm. Year applicability can vary; please use the application dropdowns to confirm fitment for your specific configuration.

Features

• Direct drop-in for the stock air box
• Less restrictive for improved flow
• 4-layer oiled cotton gauze filtration
• Washable/reusable; quick installation

Have questions or planning an install? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We have locations in Austin, Texas and the Los Angeles, California area offering professional installation and customization services. Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov