The timing spline ensures the timing chain stays taut

The Ferrea B38 Valve Spring Kit is engineered to eliminate three of the most common causes of engine failure in performance builds: binding

The E36 driveshaft is made from 3″ x

Inner wheel wells do not need to be modified with tire diameter up to 635mm (215/45R17

B46 CNC Cylinder Head Porting 20-0749-FL The timing spline ensures the5150 AutoSport 5 Axis CNC Cylinder Head Porting for BMW B46 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 efficiency for