N51 N52 MAF, 6" Bellmouth and Intake Pipe Assembly | MAF70Upgrade your intake airflow with this air intake pipe and 6" velocity pipe designed to connect directly to the factory N52 MAF diameter and connector. Compared to the stock 2. 95" inner diameter, the larger 6" inlet reduces restriction and inlet turbulence, allowing the engine to draw air more efficientlyespecially at higher RPM and wide open throttle. The velocity style transition smooths airflow along the inner walls, reducing drag and pressure drop
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