The aFe Momentum GT Pro 5R cold air intake for BMW N55 3.0L engines (2011–2013 135i/335i/335is) uses a one-piece roto-molded housing, a CAD-designed roto-molded intake tube and a large oiled 5-layer Pro 5R filter to increase airflow—stated as a +26% improvement over stock. The system includes premium hardware, a sight window for inspection, and is designed for simple installation without cutting or drilling of factory parts.
aFe Momentum GT Pro 5R Cold Air Intake System 11-13 BMW 335i E90/E87 I6 3.0L (N55)