BMW 5 7 Series E38 E39 Door Lock With Motor Actuator Front Left N/S 8235103

BMW 5 7 Series E38 E39 Door Lock With Motor Actuator Front Left N/S is an original component from the Locks and latches group, designed for precise integration with the factory central locking system. The integrated electric motor ensures reliable locking and unlocking of the door, while the design tailored to the specific BMW model minimizes the risk of installation issues.

Specifications and technical data

• SKU: rhd-8235103
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8235103
• Substitutable numbers: 51218235103, 8235103, 51218166249, 8166249, AS
• Location on the vehicle: Front, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function in the vehicle

The presented lock is designed for installation in the front left door area, on the driver's side in BMW 5 and 7 Series E38 / E39 generation vehicles. The integrated electric actuator works with the central locking system and the vehicle's electrical installation, being responsible for:

• mechanical locking and unlocking of the door from the inside and outside,
• proper cooperation with the external and internal door handle,
• operation of the central locking function via remote control or key,
• stable retention of the door in the closed position while driving.

Thanks to the factory fitment for the E38/E39 body, the lock maintains the correct geometry of rods and mechanisms, which translates into repeatable, predictable operation in daily use.

Construction and advantages of the original BMW solution

As a BMW brand component, the door lock with actuator has been designed for long-term cooperation with the factory door mechanism. It includes both the mechanical part (latches, levers, guides) and the electrical part (motor, gear, wiring connector), creating a cohesive module mounted in the door shell.

Key advantages of this solution include:

• factory fitment to the door construction of BMW 5 and 7 Series E38/E39,
• preservation of the original operating characteristics of handles and central locking,
• stable cooperation with the vehicle's comfort electronics,
• reduced risk of play and improper closing compared to universal replacements.

Vehicle placement and installation aspects

The lock is designed for installation in the front left door, which is important for both mounting geometry and the direction of the mechanism's operation. In practice, this means that:

• mounting points correspond to the factory holes in the door shell,
• the routing of rods and cables is consistent with the original layout,
• the electrical connector is prepared for direct connection to the door wiring harness.

Thanks to this, installation in most cases comes down to removing the door upholstery, disconnecting the old module, and installing the presented lock, without the need for structural modifications.

Condition and benefits of using an OEM used part

The offered element comes from the used OEM BMW parts group, which in practice means maintaining the original manufacturing quality at a more attractive cost compared to new components. In the case of door locks, this is particularly important because:

• original components are designed for a specific model and generation,
• locking mechanisms are optimized for durability and safety,
• full compatibility with the factory comfort system is maintained.

Choosing a used OEM lock is a reasonable solution for maintenance repairs when you want to maintain factory functionality without excessively increasing service costs.

Technical support and additional information

Before purchasing, it is worth comparing the construction of your current lock with the presented element and verifying compatibility with the body version and vehicle year. In case of doubt, it is helpful to check factory markings and equipment configuration (e.g., type of central locking, alarm, comfort closing).

If you are planning a comprehensive repair or upgrade of the door lock area in your BMW and need other elements from the same group, such as locking mechanisms, actuators, or lock cylinders, check the available parts in the BMW Locks and latches category.

For drivers interested in a broader look at technical solutions used in vehicles of this brand, including the cooperation of drive systems with comfort and safety systems, the article xDrive, 4Matic, quattro or 4Motion – a comparison of AWD drives from BMW, Mercedes, Audi and VW, discussing the construction and service of selected components, may be useful.