BMW Valvetronic Eccentric Shaft Actuator - 11377603979 135i, 135is, 228i, 228i xDrive, 320i, & more

Part number 11377603979, 11377599021

This electric actuator sits inside the cylinder head and controls the position of the intermediate shaft to control intake variable valve lift. This Valvetronic actuator is part of BMW's third generation of the system and works both as the actuator and the sensor which were previously separate parts.