Cylinder Head Valvetronic Timing Actuator Motor Compatible with N20 N55 135i 228i 320i 328i 428i

Cylinder Head Valvetronic Timing Actuator Motor compatible with N20 and N55 engines.Fits the following models: 2011–2013 135i, 2014–2016 228i, 2015–2016 228i xDrive, 2013–2016 320i, 2013–2016 320i xDrive, 2012–2016 328i, 2014–2016 328i GT xDrive, 2013–2016 328i xDrive, 2014–2016 428i, 2015–2016 428i Gran Coupe, 2014–2016 428i xDrive, 2015–2016 428i xDrive Gran Coupe.Part numbers: 11377599021 and 11377603979.

• Model Compatibility: Fits vehicles equipped with N20 or N55 engines including 135i, 228i, 320i, 328i, and 428i models.Part Function: Replacement valvetronic timing actuator motor for cylinder head in N20 and N55 engine applications.Part Identification: Corresponds to part numbers 11377599021 and 11377603979 as specified for valvetronic timing actuator motor function.Installation Purpose: Restores valvetronic timing actuator motor functionality when replacing a failed or damaged unit.Application Scope: Designed for use as a direct-fit replacement motor in the cylinder head valvetronic system of listed models.