Mercedes-Benz E S211 W211 Rear Left Door Window Regulator Lifter A2117300346

The Mercedes S211 W211 rear sunroof mechanism is an original part from the Window regulators and motors group, designed for the rear left side of the body. Thanks to its factory design, it ensures proper guidance and control of the sunroof panel, maintaining the correct geometry and smooth operation of the entire system.

Specifications and technical data

• SKU: A2117300346
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2117300346
• Substitutable numbers: A2117300346, A 211 730 03 46, A2118202342, A 211 820 23 42, EM
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Function of the Mechanism

The presented mechanism is dedicated to S211 estate and W211 saloon models, where it is responsible for the precise movement and positioning of the rear sunroof on the left side. The component works with the guide and drive system, ensuring smooth opening, closing, and stable holding of the glass in the set position while driving.

Thanks to its design conforming to factory solutions, the sunroof mechanism maintains correct assembly tolerances, which reduces the risk of jamming, excessive play, or leaks in the roof area. This is particularly important in vehicles used daily, where acoustic comfort and body tightness directly impact the perceived driving quality.

Construction and Vehicle Placement

The element is designed as part of the sunroof sliding system, mounted in the rear left area of the roof. This vehicle placement allows for proper force distribution within the mechanism and cooperation with other components of the opening system. The mechanism transfers motion from the drive to the guides, stabilizing the glass operation throughout its entire range of movement.

The design solution used by the vehicle manufacturer ensures compatibility with factory mounting points and the standard control system. This allows for installation without the need for structural modifications to the roof or electrical system, which is important for the durability and safety of the body.

Benefits of Using an Original Mechanism

Using an original sunroof mechanism in S211 and W211 models allows for the restoration of proper system operation in situations where there are problems with closing, uneven movement, or jamming of the glass. Replacing a worn-out part with one from the same design line minimizes the risk of improper fit and reduces the need for additional adjustments.

Key benefits include:

• maintaining the factory geometry of the sunroof glass guidance,
• consistency with the original drive and control system,
• reduction of noise and vibrations in the roof area after correct installation,
• the ability to restore full sunroof functionality without costly modifications.

Item Condition and Installation Aspects

The mechanism is offered in used condition, allowing for economical repair while maintaining original manufacturer specifications. Before installation, a standard inspection of mounting points, guides, and cooperating sunroof components is recommended to ensure smooth operation of the entire system on the rear left side.

In workshop practice, installation involves dismantling the interior headliner in the rear of the vehicle, disconnecting the old mechanism, and installing the new element in the existing mounting points. A correctly performed operation restores the opening and tilting function of the sunroof, as well as improves the comfort of using the vehicle in daily operation.

Part Selection by Numbers and Compatibility

To ensure that the selected rear sunroof mechanism is suitable for a specific vehicle configuration, it is advisable to verify compatibility by OEM part number and available replacement numbers. This approach facilitates matching the component to the body version, year, and equipment, which is particularly important for models with an extensive options list.

If you plan to service other components responsible for window and sunroof control in your Mercedes and want to maintain consistency in design solutions, check the available parts in the Mercedes Window Regulators and Motors category.

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