Replacement actuators are now available for the OM642 turbocharger, but it is important to find the correct version. OM642 Turbocharger Information The Mercedes OM642 turbocharger uses variable internal vanes, also referred to as a VNT, in order to direct airflow through the turbines which increases or decreases turbocharger pressure. On the OM642 motor the vanes … Continue reading Mercedes Diesel OM642 Actuator Replacement