BMW 440i Air Filter - Dinan - High Flow Drop-in Replacement (2017-2020). This direct-fit, reusable filter improves intake flow compared to the factory paper element while maintaining dependable filtration.

Built with four layers of high-flow oiled cotton gauze, the Dinan filter reduces pressure drop so your B58-powered 440i doesn’t have to work as hard to breathe. It installs in the stock air box in minutes, provides consistent airflow to support performance and efficiency goals, and is washable for long-term service that helps trim maintenance costs. Dimensions are 265mm x 260mm and it cross-references BMW part number 13718632502.

Features

• 4-layer oiled cotton gauze media
• Improved flow and reduced pressure drop vs stock
• Washable and reusable for long service life
• Direct drop-in for OEM air box; quick install
• 265mm x 260mm; BMW cross-ref 13718632502

Questions about fitment or install? Call us — Austin, Texas 512-982-9393 (TX) or Los Angeles, California area 562-981-6800 (CA). Our team offers installation and customization services at both locations. Buying multiple items? Please contact us for shipping discounts. We install on premises at both locations.

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