Most of heavy and medium duty engines are equipped with Variable Geometry Turbochargers (VGT).
The VGT actuator controls the vanes inside the turbocharger which increases or decreases exhaust gases driving the turbine wheel, which in turn, increases or decreases turbo boost based on engine operating conditions.
Watch the video now to learn more details. You will find your ideal VGT turbocharger actuator replacement gasket from MJ.