- Oil Leaks: Visible oil leaks at the front of the engine

responsive street performance or a more aggressive setup for the racetrack

Properly cleaned and prepared services are essential to ensure precise port and polish modifications

Installation Notes

providing superior clamping force and reliability under extreme loads

N53 Combustion Chamber Upgrade Service BM_BS55_0HS_5642B6S - Oil Leaks: Visible oil5150 AutoSport Combustion Chamber Upgrade Service for BMW N53 Engines Please note that price is based on customer providing core. If you need help sourcing a core, please contact our sales team. Our CNC Cylinder Head Combustion Chamber Service is a precision machining process where the combustion chambers of an engine's cylinder head are reshaped and refined using Computer Numerical Control (CNC) technology, optimizing engine performance for street or