Dinan D401-0035 High Flow Drop-In Replacement Air Filter for BMW

The Dinan D401-0035 High Flow Drop-In Replacement Air Filter delivers enhanced airflow and engine performance for BMW turbocharged models. Engineered as a direct replacement for the restrictive factory air filter, this performance upgrade installs in minutes without modifications and provides superior filtration throughout the life of your engine.

Key Features:

• Four layers of proprietary high-flow oiled cotton gauze material provide exceptional filtration while maximizing airflow
• Direct drop-in replacement for stock air filter—quick and easy installation with no modifications required
• Washable and reusable for the life of the engine, eliminating the need for replacement filters
• Less restrictive design allows increased airflow for maximum engine performance and efficiency
• Compatible with Dinan Carbon Fiber Cold Air Intakes (D760-0029 and D760-0030) for stacked performance gains
• Precision-engineered to OEM specifications for perfect fit and seal

This performance air filter represents a simple, cost-effective upgrade that improves throttle response and engine breathing. The advanced multi-layer cotton gauze construction captures contaminants while flowing significantly more air than the restrictive paper factory filter. When it's time for service, simply clean and re-oil the filter using approved cleaning products—no replacement necessary.