Audi A8 D4 Rear Door Catch Strap Stopper Brake Left Right N/O/S 4H0839249D

Audi A8 D4 Rear Door Catch Strap Stopper Brake Left Right is an original component from the Sliding doors group, designed for use in the rear part of the vehicle body on either the left or right side. It ensures a controlled opening range for the door leaf, stabilizes its position, and improves the daily comfort of using the vehicle.

Specifications and technical data

• SKU: 4H0839249D
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0839249D
• Substitutable numbers: 4H0839249D, 4H0 839 249 D
• Location on the vehicle: Rear, Right, Left
• Category: Cargo & Sliding Doors

Purpose and function of the door check

The door check is responsible for the precise guidance of the rear door leaf, holding it in programmed opening positions. This prevents the door from opening too wide, which reduces the risk of damage to the bodywork and adjacent vehicles. This solution also improves the ergonomics of entering and exiting, especially in tight parking spaces.

The component has been designed specifically for the Audi body structure, taking into account the characteristic geometry of the hinges and the weight of the rear doors. This ensures the correct resistance characteristics during opening and closing, as well as consistent performance over a long period of operation.

Construction and fitment for Audi A8 D4

Audi A8 D4 Rear Door Catch Strap Stopper Brake Left Right is a component mounted in the rear part of the vehicle, suitable for use on both the right and left sides. This solution facilitates part selection during repairs while maintaining the structural consistency of the entire door system.

The door check works with factory hinges and body mounts, which translates into:

• proper fitment with the door structure and body pillar,
• stable guidance of the door leaf throughout the full range of motion,
• maintenance of the correct opening and closing geometry.

Performance characteristics and benefits of installation

A properly selected door check affects the perceived comfort of door operation – it eliminates uncontrolled "sagging" of the door leaf, limits sudden movements during gusts of wind, and improves the overall impression of the vehicle's solidity. In the event of wear of the factory component, replacing it with a functional part restores:

• smooth, predictable rear door movement,
• stable intermediate opening positions,
• better protection of the paintwork and body edges.

The product comes from the group of original used parts, which allows for maintaining compliance with Audi's factory specifications while optimizing repair costs.

Vehicle placement and installation aspects

The door check is intended for installation in the rear part of the vehicle, with the possibility of use on both sides of the body. Such placement on the vehicle facilitates service and shortens replacement time, as the design provides service access from the door and pillar side.

When selecting parts, it is worth paying attention to compatibility with the body version and door configuration to maintain the correct operating characteristics of the mechanism. Using a component from the same construction group avoids problems with non-factory fitment or incorrect range of motion.

If you are planning a comprehensive repair or upgrade of the door zone in your Audi and need other elements from the same group, such as guides, sliding mechanisms, or additional door modules, check the available parts in the Audi sliding doors category.

Additional information and technical advice

When choosing used body components, it is worth being guided by compliance with factory specifications and the actual technical condition of the element. A properly selected rear door check allows for restoring the original functionality of the opening system without the need for interference with the body structure.

If you are considering a wider range of modifications or vehicle optimization using proven elements from the secondary market, the following article may be helpful: The best used parts for tuning your car, which discusses a practical approach to selecting used components.