Audi Q7 4M Door Window Lifter Regulator Mechanism Rear Left N/S 4H0839461A

The Audi Q7 4M Rear Left Door Window Regulator Mechanism is an original part from the Window Regulators and Motors group, designed for precise operation in the rear left body zone. It ensures stable window guidance, proper power transmission, and reliable compatibility with the factory Audi electrical system.

Specifications and technical data

• SKU: 4H0839461A
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0839461A
• Substitutable numbers: 4H0839461A, 4H0 839 461 A, 4H0839461B, 4H0 839 461 B, 1021-918640-105
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Vehicle Application and Function

This mechanism is designed for installation in the rear left door of the Audi Q7 4M generation, where it is responsible for the smooth raising and lowering of the window. The construction, tailored to the specific body model, guarantees correct guide geometry and proper window positioning relative to the seals and door frame.

Its placement in the rear of the vehicle means the component has been adapted to the loads and operating frequencies typical for second-row passenger windows, contributing to stable performance in daily use.

Construction and Technical Fitment

The window regulator mechanism utilizes a system of guides and cables working in conjunction with a motor from the Window Regulators and Motors group. The arrangement of mounting points corresponds to the factory mounting holes in the Audi Q7 4M doors, facilitating servicing and reducing replacement time.

Its original Audi origin promotes maintaining proper structural rigidity, correct cable tension, and appropriate interaction with the factory window control system, including comfort closing functions or anti-pinch protection, if present in the specific vehicle configuration.

Condition, Origin, and Benefits of Use

The part comes from the segment of used original Audi parts, allowing for a reasonable repair cost while maintaining factory-standard fitment. Compared to aftermarket alternatives, using an original mechanism reduces the risk of issues with window geometry, excessive play, or operational noise.

Choosing this solution is particularly beneficial for vehicle repairs where maintaining consistency with the factory specification is important – both in terms of the electrical system's operation and the mechanical durability of the regulator.

Installation and Servicing Aspects

The mechanism is intended for direct installation in place of the factory window regulator in the rear left door. Thanks to its compatibility with the original Audi Q7 4M door construction, servicing can be performed using standard workshop procedures, without the need for body modifications or additional component adjustments.

Before installation, it is recommended to check the condition of the window guides, seals, and the proper operation of the electrical system controlling the windows, to fully utilize the potential of the installed mechanism and minimize the risk of repeat service interventions.

System Expansion and Related Component Selection

If you are planning a comprehensive repair or upgrade of the door and window area in your Audi and require other parts from the same group, such as window drives, guide mechanisms, or electric controllers, check the available parts in the Audi Window Regulators and Motors category.

When working with used components, it is advisable to ensure proper operation and maintenance of the entire window system. Practical tips for extending the lifespan of used car parts can be found in the guide How to Extend the Lifespan of Used Car Parts?.

Technical Support

Selecting the correct parts for a specific vehicle model, including those outside the Audi brand, often requires broader knowledge of common faults and repair costs. In the context of planning a service budget, the article Faulty BMW E90 Engines: Find Out What Can Ruin Your Budget! can be helpful, illustrating how informed decisions about parts impact the overall cost of car ownership.