Audi A4 B9 Rear Door Lock Actuator Mechanism Right O/S Assembly 4G0839016F

Audi A4 B9 Rear Door Lock Actuator Mechanism Right O/S Assembly is an original component from the Locks and latches group, designed for the rear right side of the vehicle body. Its precise construction ensures proper cooperation with the door handle mechanism, locking system, and electrical installation, which translates into secure and stable door closing in your Audi.

Specifications and technical data

• SKU: 4G0839016F
• Mark: Audi
• Condition: Used
• OEM Part Number: 4G0839016F
• Substitutable numbers: 4G0839016F, 4G0 839 016 F
• Location on the vehicle: Rear, Right
• Category: Exterior Locks & Lock Hardware

Purpose and function of the lock

The presented lock is dedicated for installation in the rear right part of the body, making it a perfect fit for the factory geometry of the Audi A4 B9 generation doors. It is responsible for:

• mechanical locking of the door leaf against the bodywork,
• cooperation with the external and internal door handles,
• stable retention of the door in the closed position while driving.

By maintaining factory mounting points and correct geometry, the lock allows for reliable operation of the opening and closing mechanism without the need for structural modifications.

Construction and fitment for Audi A4 B9

Audi A4 B9 Rear Door Lock Actuator Mechanism Right O/S Assembly has been designed as a component compliant with the manufacturer's factory standards. This means:

• proper fitment to the rear right door panel,
• compatibility with the factory door handle mechanism and linkages,
• maintaining the correct position of the lock tongue relative to the body pillar.

Such a solution facilitates installation and allows for maintaining the consistent operation of the entire locking system on the rear passenger side.

Benefits of using an original lock

Using an original component from the Locks and latches group in an Audi A4 B9 brings a number of practical benefits:

• maintaining the factory level of safety when the doors are closed,
• proper closing and holding of the door without play or rattling,
• maintaining correct cooperation with other door components on the rear right side.

This solution is particularly recommended when replacing a damaged or worn lock, when you care about stable and predictable operation of the door mechanism without experimenting with replacements of uncertain fitment.

Condition and service application

The offered lock comes from an Audi vehicle and is a used component, which makes it an attractive cost-effective alternative while maintaining the original construction. It will work well both for post-accident repairs and for typical maintenance replacement, when the existing lock causes problems with closing or locking the rear right door.

Expansion of the locking system and guide materials

If you are planning a comprehensive repair or upgrade of the side door area in your Audi and need other elements from the same group, such as locking mechanisms, cylinders, or additional mounting elements, check the available parts in the Audi locks and latches category.

For more extensive service work, it is also worth taking care of other vehicle systems – in the summer season, an efficient cooling system is particularly important. Practical tips on selecting used components can be found in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which will help optimize vehicle operating costs without compromising safety.