BMW 325Ci Air Filter - Dinan - High Flow Drop-in Replacement (2001-2006). A direct-fit, reusable upgrade for your factory air box that increases airflow while maintaining reliable filtration.

Built with 4 layers of oiled cotton gauze, this Dinan filter reduces pressure drop versus stock paper media, helping the engine breathe easier for consistent performance and efficiency. It installs in minutes and is serviceable for the life of the vehicle—wash, re-oil, and reinstall. Designed to fit the OEM air box on E46 325Ci models with M54 engines. Reference size 240mm x 175mm (9.45 x 6.89 in); OEM cross-reference 13721744869.

Features

• Direct replacement for 2001-2006 BMW 325Ci (E46, M54)
• 4-layer oiled cotton gauze filtration media
• Improved flow and reduced pressure drop vs. stock
• Washable and reusable for long-term value
• Compatible with the stock air box
• Quick, straightforward installation

Have questions or need fitment guidance? Call us. We support enthusiasts from our Austin, Texas and Los Angeles, California area locations, where we also offer professional installation and customization services. 512-982-9393 (TX) | 562-981-6800 (CA)

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