Replace Part Numbers — Eccentric Shaft Actuator #11377603979, 11377599021, VDO A2C5328032080, VDO A2C53280320 Compatibility — for 2010-2019 BMW 135I 228I 320I 328I 335I 428I 528I X1 X3-X6 Z4 M3 435I 535I 640I 740I ActiveHybrid 3/5/7 M235I High Quality — Manufactured with the highest quality materials to create a strong, Longer service life due to high-quality materials Functionality — The eccentric shaft position sensor is used as a feedback for the Valvetronic eccentric camshaft. The eccentric shaft is actuated by the Valvetronic motor and in return controls variable intake valve lift. The eccentric shaft sensor is mounted to the cylinder head beneath the valve cover. Quality Assurance — You can enjoy a 12-month warranty in our shop