2020-Present     G20/G21     B3

1 mm Intake / 28

catastrophic engine failure

potentially causing valves to drop into the combustion chamber and resulting in catastrophic engine failures

B58 5-Axis CNC Cylinder Head Porting by 5150 AutoSport scr5150 2020-Present G20/G21 B35150 AutoSport 5 Axis CNC Cylinder Head Porting for BMW Toyota B58 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