Mercedes W251 Side Quarter WIndow Adjuster Actuator Rear Left N/S A2516700304

Mercedes W251 Rear Left Vent Window Handle Mechanism is an original part from the Window Regulators and Motors group, designed for operating the vent window in the rear left part of the body. Its precise construction ensures secure window guidance, stable mechanism operation, and maintains the original functionality of the opening system.

Specifications and technical data

• SKU: A2516700304
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2516700304
• Substitutable numbers: A2516700304, A 251 670 03 04
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Function of the Component

The vent window handle mechanism in the Mercedes W251 model is responsible for the mechanical control of the window tilt in the rear left part of the vehicle. The element works in conjunction with the window guide and mounting system, enabling smooth opening and closing without excessive play or jamming.

Its placement in the rear – left side area makes this component important for the comfort of rear seat passengers, as well as for proper interior ventilation when the window is tilted.

Construction and Vehicle Fitment

The handle is designed as part of the system responsible for the operation of the vent window, belonging to the Window Regulators and Motors group. The construction is intended for installation in factory mounting points, which helps maintain the original window operating geometry and proper sealing against gaskets.

The appropriate profiling of the handle and connection points allows for correct force transfer during opening and closing, reducing the risk of overloading other mechanism components.

Condition, Origin, and Benefits of Use

The offered handle is an original Mercedes part in used condition, which in practice means maintaining the factory assembly and functional specifications while reducing repair costs. Choosing such a component helps maintain the vehicle's technical consistency with the solutions intended by the manufacturer.

Using the original vent window mechanism handle translates to:

• proper cooperation with the existing tilting mechanism,
• stable window operation without unwanted play,
• maintaining operating comfort for rear seat passengers.

Part Selection by Numbers and Vehicle Compatibility

To ensure the handle is fully compatible with your vehicle, it is advisable to verify compatibility by the OEM number or interchangeable numbers assigned to this reference. This selection method minimizes the risk of error and speeds up the service process, especially for components in the Window Regulators and Motors group, where precise fitment is crucial.

If you are planning a comprehensive repair or upgrade of the side window area in your Mercedes and need other parts from the same group, such as guides, lifting mechanisms, or window drives, check the available parts in the Mercedes Window Regulators and Motors category.

Technical Support and Additional Information

When selecting spare and mechanical parts for Mercedes vehicles, it is advisable to use reliable sources of knowledge based on technical data and workshop practice. In the context of used components, an expert guide discussing the principles of selecting parts by OEM numbers and real economic benefits can be particularly helpful – you will find it in the article Why Buy Used Gearboxes and Engines – Facts Instead of Myths, which clarifies the most important issues related to purchasing used components.