Audi A6 C6 Rear Door Lock Latch Seal Underlay Right O/S 4F0839087

Audi A6 C6 Rear Door Lock Latch Seal Underlay Right O/S is a precision component from the Door seals category, designed specifically for the rear right body area. It is responsible for the stable seating of the lock seal, which translates into proper sealing, noise reduction, and the correct operation of the door locking mechanism in your Audi.

Specifications and technical data

• SKU: 4F0839087
• Mark: Audi
• Condition: Used
• OEM Part Number: 4F0839087
• Substitutable numbers: 4F0839087, 4F0 839 087, 4F0837087, 4F0 837 087
• Location on the vehicle: Rear, Right
• Part type: Door Seal
• Category: Door Seals

Purpose and function in the Audi A6 C6

The rear right door lock seal underlay in the Audi A6 C6 operates in a demanding area of the bodywork where sheet metal components, the door lock, and the seal meet. Its task is to:

• maintain the correct position of the seal around the lock,
• limit the penetration of moisture and contaminants into the interior of the door,
• stabilize the operation of the lock during repeated opening and closing,
• reduce unwanted noises resulting from play in the lock area.

Thanks to its proper fit for the rear right side of the body, this component helps maintain the structural integrity of the door and acoustic comfort inside the vehicle.

Construction and body fitment

The underlay has been developed as a part dedicated to a specific model, which ensures proper fitment with the lock and the door sheet metal. This means that:

• the geometry of the component is adapted to the shape of the rear right door cavity,
• the mounting holes are consistent with the factory mounting points,
• the contact surface with the lock seal ensures even pressure on the sealing material.

Such fitment reduces the risk of leaks and facilitates installation, which is particularly important when servicing doors after a collision, performing body repairs, or replacing the lock.

Component condition and service application

The offered underlay comes from dismantling and is intended for reinstallation in a vehicle where it is necessary to replace a damaged or missing component in the rear right part of the body. It is especially useful in situations where:

• the original underlay was deformed during body repairs,
• corrosion or damage has occurred in the door lock area,
• leaks, rattles, or play appear in the area of the rear right lock.

Using the original design solution allows you to maintain the factory character of the assembly and avoid problems typical of universal components.

Benefits of using a dedicated lock seal underlay

Using the correct underlay in the rear right door area of the Audi A6 C6 brings a number of practical benefits:

• Stable lock operation – proper support of the seal reduces the load on the mechanism during daily use.
• Better door sealing – limiting the ingress of water and dirt into the door structure.
• Acoustic comfort – reduction of rattles and squeaks resulting from play in the lock area.
• Structural integrity – maintaining factory geometry and stiffness of connections in the rear right part of the body.

This solution is particularly recommended for comprehensive door repairs when you want to maintain the correct operating parameters of the lock and the tightness of the entire door assembly.

Expanding Audi door service

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

To broaden your knowledge about the construction and service of premium class cars, including solutions used in body systems and seals, it is also worth reading an article describing the development of technology in the luxury sedan segment: Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years.