The added material provides unmatched durability

5mm–1mm larger than the gasket bore

Mishimoto has the perfect upgrade: the BMW 335i/335xi/135i Performance Aluminum Radiator

it optimizes engine performance

This kit includes a high-performance head gasket and head stud kit designed for BMW M30B30

S50B30 S50B32 CNC Cylinder Head Porting Engine:S50B32 The added material provides unmatched5150 AutoSport 5 Axis CNC Cylinder Head Porting for BMW S50B30 S50B32 Engines Please note that price is based on customer providing disassembled, clean core. If you need help sourcing a core, please contact our sales team. Also note that this service includes a 1 2 week turnaround time for service completion, beginning when the 5150 Team receives your head. Investing in cylinder head porting for your high performance BMW engine enhances airflow