Dinan Air Filter | BMW 430i (D401-0041)

The Dinan 17-20 BMW 430i Air Filter is a high-performance replacement designed to improve airflow and engine efficiency. Constructed with four layers of oiled cotton gauze, this filter offers better flow and reduced pressure drop compared to factory paper filters. Its design allows the engine to work less hard to produce the same or increased power, resulting in enhanced performance. Additionally, the oiled cotton media makes the filter washable and reusable, providing long-term cost savings while maintaining excellent filtration to keep the engine clean and protected.

This drop-in replacement is specifically engineered for the 2017 to 2020 BMW 430i models. It fits seamlessly into the stock air intake system, serving as an upgrade over the original filter for street and performance driving. The filter is a direct replacement, requiring no additional modifications for installation. Ideal for daily driving or enthusiast applications, this filter ensures optimal airflow, durability, and ease of maintenance, making it a reliable choice for maintaining engine performance over time.