Audi A4 B9 Rear Door Lock Assembly Actuator Mechanism Right O/S 4G0839016M

Audi A4 B9 Rear Door Lock Assembly Actuator Mechanism Right O/S is an original component from the Locks and latches group, designed for the rear right side of the vehicle body. It ensures the proper operation of the door locking system, stable closing, and secure latching, which is crucial for the comfort of daily vehicle use.

Specifications and technical data

• SKU: 4G0839016M
• Mark: Audi
• Condition: Used
• OEM Part Number: 4G0839016M
• Substitutable numbers: 4G0839016M, 4G0 839 016 M
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function of the mechanism

The presented mechanism is dedicated to the rear right door of an Audi, where it is responsible for mechanical locking and unlocking as well as working in conjunction with the door handle and linkage system. As an original part, it has been designed for the specific geometry of the door, ensuring the correct guidance of the lock tongue, appropriate pressure, and consistent operation with every opening and closing cycle.

The placement on the vehicle is precisely defined, which facilitates the selection of the correct component for post-collision repairs, replacement of corroded elements, or issues with closing the rear passenger door.

Construction and fitment for Audi A4 B9

Audi A4 B9 Rear Door Lock Assembly Actuator Mechanism Right O/S has been constructed as a component that works with the factory door panel, window guides, and internal wiring. The design of the housing and mounting points is adapted to the factory mounting holes, which allows for installation without any bodywork modifications or mounting adaptations.

The mechanism is prepared for operation under typical passenger car conditions – it accounts for loads resulting from frequent door opening, temperature changes, and body vibrations. As a result, after proper installation, it maintains stable operating characteristics and proper alignment with the striker on the pillar.

Benefits of using an original lock

Using an original door lock in an Audi A4 B9 provides a number of practical benefits:

• secure locking of the rear right door, which affects passenger safety,
• consistency with the factory door and pillar construction, without the need for bodywork modifications,
• preservation of the manufacturer-intended operating characteristics of handles and linkages,
• easier diagnostics in case of future faults, thanks to compliance with service documentation.

For the user, this means stable closing and predictable lock operation, which is particularly important during daily use of the car in city traffic and on longer journeys.

Condition and use in repairs

The offered mechanism comes from the used parts group, which allows for an economical repair of the locking system while maintaining the original design. This type of component is often chosen for post-accident repairs, replacing a damaged lock after a break-in attempt, or when there are issues with the proper closing of the rear right door.

Before installation, it is recommended to perform a standard inspection of the door system (linkage routing, condition of handles, adjustment of the pillar striker) to fully utilize the capabilities of the offered mechanism and avoid secondary issues resulting from improper adjustment.

Part selection and additional technical information

When selecting a lock for an Audi, it is worth paying attention to compatibility with the body version and the placement on the vehicle. In case of extensive service work on the drivetrain or modernization of other components, guide materials may also be helpful – for example, an article on clutch and dual-mass flywheel diagnostics and selecting parts for the drivetrain, which facilitates the planning of comprehensive repairs.

If you are planning further expansion or service of systems responsible for locking and latching in your car, it is also worth browsing other items from the Locks and latches for Audi group to select a set of parts that are consistent in terms of construction and technical specifications.