Audi A4 B8 Rear Door Left N/S Mechanism Lock Actuator Latch 8K0839015C

Audi A4 B8 Rear Door Left N/S Mechanism Lock Actuator Latch is an original component from the Locks and latches group, designed for the rear left side of the vehicle body. It ensures the proper operation of the door locking and unlocking mechanism, stable latching, and correct integration with the vehicle's factory systems. This is a practical solution for users who want to restore full door functionality without compromising on fitment.

Specifications and technical data

• SKU: 8K0839015C
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0839015C
• Substitutable numbers: 8K0839015C, 8K0 839 015 C
• Location on the vehicle: Rear, Left
• Category: Exterior Locks & Lock Hardware

Purpose and function of the lock

The presented lock is dedicated to the rear left side of the vehicle, which guarantees proper alignment with the door structure and bodywork. It is responsible for:

• mechanical door latching when closing,
• proper release of the latch when opening from the inside and outside,
• stable retention of the door in the closed position while driving.

Thanks to its factory design, the lock works with original handles, linkages, and other door mechanism components, which facilitates trouble-free installation.

Benefits of using an original lock

Using an original lock in an Audi allows you to maintain the structural integrity of the entire door system. Key advantages include:

• precise fit to factory mounting points,
• proper cooperation with the existing installation and door mechanics,
• reduction of the risk of play, rattling, and leaks resulting from part mismatch.

This solution is particularly beneficial for post-accident repairs or replacing worn-out components, where maintaining the vehicle's original performance parameters is essential.

Vehicle placement and fitment

The lock is intended for installation in the rear left part of the body. Such specific vehicle placement facilitates the selection of the correct component when repairing a specific door. Before purchasing, it is worth verifying compatibility with your model using technical data and manufacturer markings.

Part condition and service application

The item is a dismantled part, which allows for economical repair while maintaining the original construction. This type of part is suitable both for workshops specializing in the Audi brand and for users servicing their own vehicles who expect factory fitment and predictable mechanism operation.

Use in repairs and upgrades

Replacing the rear left door lock is recommended in case of problems with closing, locking, or improper handle operation. Installing an original component allows you to:

• restore correct door locking and unlocking,
• reduce noise resulting from improper closing,
• maintain an appropriate level of passenger safety.

If you are planning a comprehensive repair of door mechanisms, it is also worth considering other elements from the same group, available in the Locks and latches category, to maintain the consistency of the entire system.

Safety, quality, and part selection

Using original components has a direct impact on the durability and predictability of the systems responsible for vehicle locking. If you want to better understand why choosing used factory components is advantageous in terms of technical and economic aspects, read the article on the advantages of used original OEM parts and the safety of their use. This will allow you to consciously choose parts for your car, while maintaining a high level of functionality and safety.