The Mishimoto BMW E90/E92 w/ N52 Engine Black Silicone Intake Boot is designed to replace the stock intake boot in your BMW E90/E92 with an N52 engine. This silicone boot is made from high-grade silicone and is designed to be more durable than the stock boot. The Mishimoto boot also provides increased airflow and improved heat resistance, allowing your engine to run cooler and more efficiently. The black finish gives your engine bay an upgraded look, and the reinforced construction ensures a secure fit.