Mercedes R171 W203 Rear Differential Diff A1713500514 A1713500100 3,46 WARRANTY

Listing details

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

Mercedes R171 W203 Rear Differential Diff 3,46 is an original rear differential from the Differentials group, designed for installation in Mercedes vehicles. The stable gear ratio and factory design ensure predictable drivetrain behavior, which translates into confident handling and comfortable operation of the chassis system.

Specifications and technical data

• SKU: A1713500514
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1713500514
• Substitutable numbers: A1713500514, A 171 350 05 14, A1713500100, A 171 350 01 00, A2033510605, A 203 351 06 05
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented rear axle is a component responsible for transferring torque to the rear wheels and compensating for the difference in wheel rotational speed when cornering. Thanks to the properly selected 3.46 gear ratio, the differential supports balanced acceleration, correct gearbox operation, and the comfortable driving characteristics typical of Mercedes cars.

Its placement on the vehicle in the rear axle area allows for direct integration with the factory drivetrain without the need to interfere with the body or suspension structure. This solution is particularly beneficial for post-accident repairs, replacing a worn-out axle, or restoring full drivetrain efficiency.

Benefits of using an original rear axle

Using an original differential in a Mercedes R171 or W203 series allows you to maintain factory drivetrain performance parameters. In practice, this means:

• consistent, predictable vehicle behavior during acceleration and engine braking,
• proper cooperation with the stock gearbox and drivetrain electronics,
• reduction of unwanted vibrations and noise in the rear part of the body,
• maintaining the driving culture characteristic of Mercedes.

For users who expect a solid solution consistent with the manufacturer's design, such a rear axle is a practical choice for repairing or restoring the vehicle's original specifications.

Condition, origin, and service application

The item comes from dismantling and is offered as a used differential, which allows for a significant reduction in repair costs compared to a new component, while maintaining the factory design. This type of component is frequently chosen by workshops specializing in the Mercedes brand and by informed users looking for a reasonable compromise between price and functionality.

The rear axle will work well both for a standard replacement of a worn-out differential and for drivetrain reconstruction after mechanical damage. Thanks to the preservation of the original geometry and mounts, the installation proceeds in an orderly manner, without the need for vehicle structure modifications.

Gear ratio selection and compatibility

The 3.46 gear ratio is an important parameter affecting driving characteristics – perceived acceleration, engine RPM at highway speeds, and overall dynamics. Proper selection of the rear axle for a specific engine version and gearbox is crucial for maintaining correct drivetrain operation and avoiding vehicle electronics issues.

If you want to better understand how the differential ratio affects car behavior and how to choose an axle for your driving style, it is worth checking out the guide: Dismantled drive axles and differentials – how to choose gear ratios for your driving style. You will find practical tips there regarding gear ratio definitions, component compatibility, and examples of applications in various models.

Drivetrain expansion and modernization

The rear axle with a 3.46 ratio can also be an interesting base for users considering modifications to drivetrain characteristics as part of reasonable mechanical tuning. In combination with a properly selected gearbox and tires, it allows for shaping the balance between dynamics and driving economy.

If you are planning broader vehicle modifications using dismantled components and want to optimize costs, the following article may be helpful: Tuning with used parts – how to gain performance without spending a fortune. It describes how to safely use used elements when improving car performance.

If you are planning a comprehensive repair or modernization of the drivetrain area in your Mercedes and need other elements from the same group, such as additional axles, differentials, or complete drivetrain assemblies, check the available parts in the Mercedes Differentials category.