Mercedes CLA C118 Coupe Window Lifter Carrier Rear Door Left N/S A1187300501

The Mercedes CLA C118 Coupe Left Rear Door Window Regulator is an original part from the Window Regulators and Motors group, designed for the rear left window in a coupe body style. Its factory design ensures proper operation of the window lifting and lowering mechanism and stable window guidance within the door, contributing to user comfort and cabin sealing.

Specifications and technical data

• SKU: A1187300501
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1187300501
• Substitutable numbers: A1187300501, A 118 730 05 01
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and Fitment

This regulator is specifically designed for the rear left window of the Mercedes CLA C118 generation in the Coupe version. Its precise placement on the vehicle minimizes the risk of selecting the wrong part and facilitates communication with your mechanic when planning repairs or replacing a damaged mechanism.

As a component within the Window Regulators and Motors category, this regulator works in conjunction with the factory window control system, ensuring smooth window movement throughout its full range and proper guidance within the door channels.

Technical and Functional Characteristics

The window regulator is responsible for transferring the drive from the control system to the window, ensuring its stable lifting and lowering. Its construction is adapted to the geometry of the left rear door in the CLA C118 Coupe, allowing for:

• correct window operation line relative to the seals,
• appropriate window pressure against the door frame,
• compatibility with the factory window control system.

By using an original solution, compatibility with factory mounting points and the vehicle's original electrical system is maintained, simplifying installation and reducing replacement time.

Item Condition and Practical Application

This regulator is offered as a used part, enabling an economical repair while maintaining the original manufacturer's specifications. It is a suitable solution for situations involving mechanical damage, seized mechanisms, or issues with smooth window operation in the left rear door.

Choosing an original part from disassembly is particularly beneficial for repairing vehicles several years old, where both cost and maintaining the original fit of the part to the body and specific equipment of the Mercedes CLA C118 Coupe version are important.

Benefits of Using an Original Regulator

Using this window regulator in the left rear door allows for the restoration of proper mechanism operation without the need for installation modifications or mounting adjustments. Key benefits include:

• factory fit for the CLA C118 Coupe body,
• maintenance of correct window operation geometry within the door,
• compatibility with the original window control system,
• potential cost savings on repairs by using a used part.

This solution is particularly valued in workshops specializing in the Mercedes brand, where assembly repeatability and predictable component behavior after replacement are crucial.

Mercedes Window Regulators and Motors – Expansion and Modernization

If you are planning a comprehensive repair or modernization of the door area in your Mercedes and require other components from the same group, such as window lifting mechanisms, control drives, or complete guide assemblies, check the available parts in the Mercedes Window Regulators and Motors category.

More About Used OEM Parts

When selecting used body and interior parts, such as window regulators, it is important to understand the differences between original parts and aftermarket alternatives, as well as the principles of selection based on manufacturer markings. The article Why Buy Used Gearboxes and Engines – Facts Instead of Myths discusses the quality and cost-effectiveness of purchasing used powertrain components, offering practical tips on interpreting OEM markings and making informed part choices.

Additionally, if you want to reduce vehicle downtime in the service center and utilize readily available original parts from disassembly, the guide Availability of Car Parts Off-the-Shelf vs. Repair Time – How Used OEM Parts Shorten Workshop Stays? may be helpful, describing the impact of quick access to parts on repair organization.