Open box This door lock actuator mechanism is a high-quality compatible part for BMW models 320i, 328i, 530i, and 750i. The package dimensions are 8.74 x 6.06 x 4.41, and it weighs 1.81 pounds. The OEM part numbers are 51227229459, 51217229467, 51227276673, and 51227318413. The item model number is 937-818, and it is manufactured by Cheriezing. This actuator is designed to provide a smooth and secure locking mechanism for your vehicle.