Mercedes R172 SLC 43 AMG Rear Axle Differential Diff 2,82 A1723503403 WARRANTY

Listing details

The differential is sold with a 90-day warranty! It was tested before removal and is in full working order.

Mercedes R172 SLC 43 AMG Rear Axle Differential Diff is a specialized drivetrain component designed for the rear axle of the Mercedes sports roadster. The precisely selected gear ratio ensures consistent torque transfer and predictable vehicle behavior during dynamic driving. This is a solution for users who expect precise drivetrain performance and handling stability.

Specifications and technical data

• SKU: A1723503403
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1723503403
• Substitutable numbers: A1723503403, A 172 350 34 03
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented differential is a component from the Differentials category, responsible for distributing power to the rear wheels and ensuring the proper utilization of the engine's performance. Its placement in the rear of the vehicle allows for efficient power transfer, which is particularly important in sports-oriented cars such as the Mercedes R172 SLC 43 AMG.

The selection of the correct rear axle has a direct impact on:

• the car's response to acceleration and downshifting,
• stability at higher speeds,
• traction during acceleration on straights and in corners,
• acoustic comfort in the cabin at constant speeds.

Technical specifications and compatibility

The differential has been designed to work with the Mercedes rear-wheel-drive system in the AMG version, where both load resistance and consistent performance across a wide range of RPMs are crucial. The rear axle construction is adapted to the character of a high-power vehicle, which translates into stable behavior during dynamic driving styles.

The component has a dedicated OEM part number and interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration. Before purchasing, it is recommended to compare the markings with service documentation or the existing component to ensure full compatibility with the drivetrain.

Condition, origin, and practical application

The offered differential is a used part, which in practice means the possibility of obtaining an original Mercedes component at a more attractive price than a new unit. This type of solution is often chosen for:

• repairs following mechanical damage to the rear axle,
• restoring the car to its factory configuration,
• optimizing the gear ratio for a specific driving style.

A properly selected and functional differential allows for maintaining factory driving characteristics while reducing service costs compared to purchasing a new component.

Benefits of installation in the Mercedes R172 SLC 43 AMG

Using this rear axle in the Mercedes R172 SLC 43 AMG provides a range of practical benefits:

• Consistent handling – predictable rear axle behavior during acceleration and engine braking.
• Efficient power utilization – gear ratio matched to the character of the AMG powertrain.
• Ability to maintain the original drivetrain characteristics – essential for cars driven dynamically.
• A reasonable compromise between performance and driving comfort in daily use.

If you want to better understand how to choose a drive axle and differential for your driving style, it is worth checking out our technical guide: Dismantled drive axles and differentials – how to choose gear ratios for your driving style. The article explains the differences in gear ratios, compatibility issues, and practical examples of using salvaged components.

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 rear axles, differentials with different gear ratios, or complete drivetrain assemblies, check out the available parts in the Mercedes Differentials category.