Audi A4 B8 Door Lock Latch Catch Actuator Rear Left N/S 8K0839015

Audi A4 B8 Door Lock Latch Catch Actuator Rear Left N/S is an original component from the Locks and Latches group, designed for installation in the rear left part of the vehicle body. It ensures the proper operation of the locking mechanism, compatibility with the actuator, and stable door closing, which translates into the safety and comfort of using the vehicle. A used OEM component is a sensible choice for professional repairs of the locking system in an Audi.

Specifications and technical data

• SKU: 8K0839015-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0839015
• Substitutable numbers: 8K0839015, 8K0 839 015
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Purpose and technical function

The presented lock is designed to operate in the rear left door area, where it is responsible for:

• mechanical locking of the door leaf against the body,
• cooperation with the central locking actuator,
• stable maintenance of the door in the closed position while driving,
• correct response to signals from the remote control or mechanical lock.

Thanks to its factory design, the lock maintains the correct mounting geometry and operating characteristics, which reduces the risk of play, rattling, and improper door closing.

Benefits of using an original Audi lock

Using an original Audi door lock allows you to maintain the consistency of the entire locking system with the manufacturer's factory solutions. In practice, this means:

• secure fit to the door structure and factory mounting holes,
• proper cooperation with the electrical installation and comfort control modules,
• preservation of the handle and latch operating characteristics intended by the manufacturer,
• reduction of the need for modifications or additional adjustments.

A used OEM element is particularly beneficial for post-accident repairs or replacing a worn-out mechanism when you are looking for a technically correct yet economical solution.

Vehicle placement and assembly aspects

The lock is intended for installation in the rear left door, which is important both when selecting parts and planning service work. Proper fitment to the specific side of the vehicle affects:

• compatibility with the guides and rods of the internal and external handle,
• proper alignment relative to the body pillar,
• trouble-free cooperation with the factory central locking system.

During installation, it is worth paying attention to the condition of the door seals, hinges, and the adjustment of the door leaf position to fully utilize the capabilities offered by a functional lock.

Application in service and body repairs

Locks and latches are a key element in the comprehensive maintenance of the door zone – both in the case of post-accident repairs and the operational replacement of worn components. Replacing the lock with an original element allows you to:

• restore the correct operation of the central locking and locking functions,
• reduce noise resulting from improper closing or door play,
• increase the sense of safety for rear-seat passengers.

This solution is especially recommended for workshops specializing in the Audi brand and users who expect stable, predictable operation of the locking mechanism.

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

Additional technical support

When selecting used body and mechanical system components, it is worth paying attention to their condition, operation, and compatibility with the specific vehicle equipment version. If you want to expand your knowledge on the conscious selection of components from the secondary market, practical methods of assessing their wear, and the impact on the durability of the drivetrain and associated sub-assemblies, check out the guide Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.