Mercedes X166 Rear Driveshaft Axle Shaft Left Right N/O/S A1663501110

Mercedes X166 Rear Driveshaft Axle Shaft Left Right is an original drivetrain component designed for installation on the rear axle of Mercedes vehicles. Thanks to its factory-spec geometry and precise length, it ensures stable torque transmission to the wheels, which translates into predictable handling and safe suspension operation.

Specifications and technical data

• SKU: A1663501110
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1663501110
• Substitutable numbers: A1663501110, A 166 350 11 10
• Location on the vehicle: Rear, Right, Left
• Category: Driveshafts

Purpose and vehicle placement

The described driveshaft is designed for use on the rear axle, with the possibility of installation on both the right and left sides. This solution facilitates part selection during drivetrain service for the Mercedes X166 series while maintaining the structural integrity of the entire drive axle.

The component works in direct connection with the differential and the wheel hub, responsible for power transmission while maintaining the proper flexibility of the joints during suspension travel. A correctly selected rear axle shaft reduces vibrations, minimizes the risk of unwanted play, and supports even tire wear.

Technical and functional characteristics

The driveshaft from this series belongs to the Driveshafts group, meaning it is an integral part of the drivetrain system between the differential and the wheel. The construction provided by the manufacturer ensures:

• stable torque transmission throughout the full range of suspension travel,
• compatibility with the factory differential and wheel hubs of the Mercedes X166,
• appropriate torsional rigidity while maintaining the required flexibility of the joints,
• compatibility with factory covers and mounts.

A properly selected rear axle shaft helps reduce typical symptoms of drivetrain wear, such as knocking when starting, jerking during acceleration, or vibrations at higher speeds. Replacing a worn component with an original driveshaft from this series is a recommended service solution in case of excessive play or joint damage.

Benefits of using an original Mercedes axle shaft

Using an original axle shaft in a Mercedes X166 ensures high dimensional compatibility with the factory suspension and drivetrain. As a result:

• the correct rear axle geometry is maintained,
• factory joint operating angles are preserved,
• the risk of accelerated wear of the differential and wheel bearings is reduced,
• the drivetrain operates under conditions intended by the manufacturer.

The component from this series is an OEM part, which in practice means predictable behavior under load and a perfect fit to factory assembly tolerances. This is particularly important in premium class vehicles, where handling precision and ride comfort are closely linked to the condition of the drivetrain.

Condition, selection, and service application

The offered rear driveshaft is a used component, which allows for economical repair while maintaining the manufacturer's original specifications. In practice, this is a beneficial solution for users who want to restore the efficiency of the drivetrain without compromising on the factory design and fitment.

When selecting an axle shaft for the Mercedes X166, it is crucial to verify compatibility with the specific vehicle version and drivetrain configuration. Manufacturer markings and interchangeable part numbers are helpful in confirming compatibility with the given model and axle configuration.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other components from the same group, such as additional axle shafts, connecting shafts, or parts working with the differential, check the available parts in the Mercedes Driveshafts category.

Technical support and selection of drivetrain components

When replacing the rear axle shaft, it is worth assessing the general condition of the differential, bearings, and other drivetrain components. Practical tips regarding the diagnostics and purchase of used components, including drive axles and sensors working with the drive, may be helpful. To better prepare for such a repair and make informed part choices, it is worth reading the guide: Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.

Summary

Mercedes X166 Rear Driveshaft Axle Shaft Left Right is a functional, original drivetrain component designed for installation on the rear axle of Mercedes vehicles. It ensures proper torque transmission to the wheels, supports handling stability, and allows for the restoration of correct drivetrain operation after the wear or damage of the factory axle shaft.