With an optimized design to enhance airflow

if you're not already running a flex fuel kit on your vehicle and plan on running with ethanol (E85)

Radium Engineering uses one of the largest filtration elements in the industry

This is an original Genuine BMW oil pump assembly for the S54 engine

your N55 engine will operate efficiently

Precision Turbo Inlet Screen Inlet Screen Size:4" for S & H Covers With an optimized design toIntroducing the Precision Turbo approved one piece turbo screen, engineered to enhance airflow while offering superior protection for your turbocharger. With a 79% open area, it allows your turbo to breathe, though with a minor impact on performance. Specifically designed for street driving, this screen strikes the perfect balance between protection and airflow. Its also compatible with velocity stacks. Available in three sizes: 4" diameter for S & H