BMW 330i Air Filter - Dinan - High Flow Drop-in Replacement (2016–2020). A direct-fit, high-flow upgrade to the factory paper element for improved breathing and efficiency.

Constructed with four layers of oiled cotton gauze, this Dinan filter reduces pressure drop versus the stock media so the engine draws air more easily while maintaining excellent filtration. It installs in minutes in the OE air box, is washable and reusable for long service life, and is a practical choice when a full intake isn’t desired. Dinan part D401-0041; approximate size 265 mm x 260 mm. Replaces BMW OE filter 13 71 8 632 502 (13718632502).

Features

• Less restrictive than stock for improved airflow and response
• 4-layer oiled cotton gauze for robust filtration
• Washable and reusable for the life of the engine
• Direct replacement; fits the factory 330i air box (2016–2020)
• Quick and easy installation
• Approx. 265 mm x 260 mm; OE cross-ref: 13718632502

Have questions or planning a build? Call our experts in Austin, TX at 512-982-9393 or in the Los Angeles, CA area at 562-981-6800. We offer installation and customization at both locations.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

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