BMW M440i Performance Air Intake - Dinan - High Flow Drop-in Replacement (2020–2026). A direct-fit filter upgrade for the factory air box, delivering better airflow and long-term serviceability.

Built with four layers of proprietary oiled cotton gauze, this Dinan filter reduces pressure drop versus stock paper media so the B58 breathes more efficiently. It retains excellent filtration, is washable and reusable for the life of the vehicle, and installs in minutes in the OEM air box—ideal when a full intake isn’t desired or within budget. OEM cross‑refs: 13718635102, 13718594535, 13718580427‑29.

Features

• Less restrictive than stock for improved flow and efficiency.
• 4-layer oiled cotton gauze media.
• Washable, reusable; lowers ongoing maintenance costs.
• Direct replacement for the stock filter; quick install.

Questions or fitment help? Call our Austin, Texas shop at 512-982-9393 or our Los Angeles, California area shop at 562-981-6800. We offer professional installation and customization services at both locations.

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