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The K&N 57 Series FIPK airbox for BMW 2/3/4 Series with the N20 engine replaces the restrictive factory airbox to reduce airflow restriction, smooth intake flow and allow the engine to inhale more air. A fully enclosed injection-molded airbox with removable lid simplifies filter access; the kit uses the factory hose location and is relatively easy to install. Systems carry K&N's No-Hassle Lifetime Limited Warranty.
K&N BMW 2-3-4 Series N20 Engine Performance Air Intake System
