Mercedes W204 W207 Rear Driveshaft OM651 Axle Shaft Left Right N/O/S A2043504010

Mercedes W204 W207 Rear Driveshaft OM651 Axle Shaft Left Right N/O/S is a component from the Driveshafts group, designed for use in the rear axle of Mercedes vehicles equipped with the OM651 unit. This OEM solution ensures proper torque transfer to the wheels, stable operation of the drivetrain, and predictable vehicle behavior during acceleration and engine braking.

Specifications and technical data

• SKU: A2043504010
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2043504010
• Substitutable numbers: A2043504010, A 204 350 40 10
• Location on the vehicle: Rear, Right, Left
• Category: Driveshafts

Purpose and vehicle placement

The described axle shaft is designed for installation in the rear of the vehicle, with the possibility of application on both the left and right sides. This solution facilitates component selection when repairing the drivetrain in Mercedes W204 and W207 series models with the OM651 engine, where maintaining compatibility with factory suspension geometry and rear axle operating characteristics is crucial.

Thanks to its precise fit for the specific vehicle platform, the axle shaft works in harmony with the factory differential and wheel hubs, which reduces the risk of improper fitment and unwanted vibrations. This is particularly important in premium class cars, where smooth, predictable drivetrain operation and appropriate driving refinement are expected.

Technical and functional characteristics

As an element from the Driveshafts group, the rear axle shaft is responsible for transferring torque from the differential to the wheel while compensating for suspension movements. The OEM design ensures proper torsional rigidity, adequate resistance to dynamic loads, and compatibility with factory joints and seals used in the given Mercedes model.

Choosing an original solution in this area has a direct impact on:

• handling stability at higher speeds,
• reduction of play in the drivetrain,
• reduced risk of vibrations and noise during acceleration,
• proper cooperation with the rear differential and suspension.

Using a component that complies with factory specifications is particularly important in vehicles with the OM651 engine, where the drivetrain is designed for specific loads and torque characteristics.

Benefits of choosing an original Mercedes axle shaft

By choosing this rear axle shaft for your Mercedes W204/W207, you gain a component designed for a specific platform and powertrain. Factory geometry and correct operating parameters translate into predictable vehicle behavior, without the need to experiment with unreliable aftermarket replacements. This solution is particularly beneficial for workshops and users who expect repeatable, stable repair results.

An element from this group is also a good choice when symptoms such as knocking during start-up, vibrations under load, or uneven drivetrain operation during cornering appear in the vehicle. Replacing the axle shaft with an OEM component allows for the restoration of proper system operation without interfering with other sub-assemblies, provided their condition is correct.

Condition and practical service application

The product is offered as a used OEM element, which in service practice often represents a reasonable compromise between repair cost and maintaining factory quality. For many Mercedes W204 and W207 series models, especially in cases of intensive use, replacing the axle shaft with an original component from the secondary market allows for significant cost reduction while maintaining the correct drivetrain operating parameters.

If disturbing noises from the rear of the drivetrain or noticeable play during load changes have appeared in your car, it is worth considering a diagnosis of the axle shaft and differential. In the context of part selection and repair planning, the following article may be helpful: Humming differential? Why a used OEM rear axle is a safer alternative to replacements, which explains how original components affect the durability of the entire system.

Selection support and repair expansion

When planning a drivetrain repair, it is worth considering other elements that work with the axle shaft, such as the differential, hubs, or wheel bearings. Faster restoration of full vehicle efficiency and reduction of workshop downtime is facilitated by the availability of used OEM components – more on this topic can be found in the material: How the immediate availability of used OEM parts shortens repair time in the workshop.

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