BMW 640i Air Filter - Dinan High Flow Drop-in Replacement (2010-2019). This direct-fit filter increases airflow over the factory paper element while maintaining dependable engine protection.

Constructed from four layers of oiled cotton gauze, the Dinan filter reduces pressure drop so the N55 engine can breathe more freely, supporting consistent performance and efficiency. It installs in the stock air box with no modifications and is washable and reusable, helping lower long-term maintenance costs. A smart choice when you want improved flow without moving to a complete intake system.

Features

• 4-layer high-flow oiled cotton gauze media
• Washable and reusable for the life of the engine
• Direct drop-in for 2010-2019 BMW 640i stock air box (N55)
• Dimensions: 273 x 260 x 40 mm (10.75" x 10.24" x 1.57")
• OEM cross references: 13717571355, 13717583725, 13717605913
• Quick installation

Have questions or need fitment guidance? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We have locations in Austin, Texas and the Los Angeles, California area, where we offer professional installation and customization services. Considering 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