Mercedes ML W163 Rear Left Door N/S Window Regulator Lifter A1637300946

Mercedes ML W163 Rear Left Door N/S Window Regulator Lifter is an original component from the Window regulators and motors group, designed for the rear left window in the ML W163 body. This used window regulator ensures a factory fit, correct window guide geometry, and stable operation of the lifting and lowering mechanism.

Specifications and technical data

• SKU: A1637300946
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1637300946
• Substitutable numbers: A1637300946, A 163 730 09 46
• Location on the vehicle: Rear, Left
• Category: Window Motors & Regulators

Purpose and function of the window regulator

The presented regulator is designed to operate in the rear left door of the vehicle, responsible for precisely guiding the window along the rails and transferring power from the motor to the lifting mechanism. The construction adapted to the ML W163 guarantees:

• correct window positioning relative to the seals,
• stable movement across the full range of opening and closing,
• compatibility with factory door mounts.

By maintaining the original geometry of the mechanism, the window operates smoothly, without excessive resistance or the risk of misalignment.

Benefits of using an original regulator

Choosing a used, original window regulator for the ML W163 is a solution that combines cost-effectiveness with the preservation of factory performance parameters. Compared to aftermarket replacements, this component offers:

• secure fit to the door structure – no need for mounting modifications,
• compatibility with the standard window control system,
• preservation of the window movement characteristics intended by the manufacturer.

This is particularly important for rear doors, where improper window operation can lead to leaks, wind noise, and accelerated seal wear.

Component condition and installation aspects

The regulator is offered in used condition, which allows for a cost-effective restoration of the window system while maintaining original specifications. The component comes from disassembly, ensuring it retains factory mounting points and the correct guide layout.

During installation, it is worth paying attention to:

• correct alignment of the mechanism relative to the door frame,
• checking the condition of the sliders and window mounts,
• verifying window operation across the full range after installation.

This approach minimizes the risk of needing to re-open the door and allows for a quick restoration of vehicle comfort.

Mercedes window regulators and motors – expansion and door area service

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other components from the same group, such as window lifting mechanisms, electric drives, or guides, check out the available parts in the Mercedes window regulators and motors category.

Technical support and part selection

When selecting a used window regulator for the ML W163, it is crucial to verify compatibility with the specific body version and the side of installation. Manufacturer markings, OEM part numbers, and interchangeable numbers can be helpful in precisely matching the regulator to a given vehicle.

If you are interested in a broader context regarding the choice between refurbished and used components, practical tips on the cost-effectiveness of such solutions can be found in the article: Refurbished or used original – which part to choose for repairs?

For drivers analyzing operating costs and potential failures in other brands, a guide to problematic BMW power units may also be useful, available here: Faulty BMW E90 engines: check what can ruin your budget.