Mercedes R171 W203 A209 Rear Axle Differential Diff 3.46 A1713500514 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 A209 Rear Axle Differential Diff 3.46 is an original drivetrain component from the Differentials category, designed for installation on the rear axle of Mercedes vehicles with gasoline engines. The precise 3.46 gear ratio ensures predictable vehicle behavior, stable torque transfer, and appropriate drivetrain performance characteristics for both daily use and dynamic driving.

Specifications and technical data

• SKU: A1713500514-1
• 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
• Fuel type: Petrol
• Part type: Differential & Housing Assembly
• Category: Differentials

Purpose and function of the rear axle

The presented rear axle with differential is structurally matched to Mercedes rear-wheel-drive systems operating with gasoline engines. Its placement in the rear of the vehicle allows for efficient torque distribution to the wheels, which translates into traction stability, predictable handling, and proper cooperation with the vehicle's safety systems. The 3.46 gear ratio differential provides a balanced compromise between acceleration and engine RPM during highway driving. This type of configuration is particularly beneficial for users expecting consistent drivetrain characteristics without placing excessive load on the engine and transmission system.

Benefits of using an original differential

Using an original rear axle with differential in a Mercedes R171, W203, or A209 allows for the preservation of factory drivetrain performance parameters. The correct gear ratio, in accordance with the manufacturer's specifications, contributes to:

• proper cooperation with the stock gearbox,
• stable vehicle behavior during acceleration and engine braking,
• maintaining the engine RPM levels intended by the manufacturer at a given driving speed,
• reduction of unwanted vibrations and stresses in the drivetrain. For the user, this means more predictable operation, easier diagnostics, and no need to modify other drivetrain components after replacing the differential.

Application in gasoline vehicles

The rear axle has been designed to work with gasoline units, which is significant for load characteristics, RPM range, and the method of torque transfer. In practice, this means that the differential is adapted to the typical operating conditions of Mercedes gasoline engines, ensuring:

• adequate durability at high RPMs,
• smooth power delivery across the entire engine operating range,
• consistent operation with factory traction control and electronic stability programs. As a result, replacing it with this model is a technically safe solution that allows for maintaining the original vehicle handling characteristics.

Characteristics of the used component

The offered rear axle with differential is a used part, sourced from dismantling. Such components are frequently chosen for professional repairs when the goal is to maintain the original manufacturer's specification while optimizing costs. A used differential from a donor vehicle allows for the installation of parts with factory geometry and fitment, without the need for interference with the suspension or drivetrain construction. Before installation, it is recommended to perform a standard technical condition verification at a specialized service center, including checking for play, leaks, and the quality of the gear oil, in order to fully utilize the potential of this component.

Gear ratio selection and additional technical materials

The correct selection of the rear axle gear ratio is crucial for driving characteristics, fuel consumption, and the durability of the entire drivetrain. It is worth paying attention to the compatibility of the gear ratio with the vehicle's factory configuration and any potential modifications (e.g., changing wheel size). To better understand the impact of gear ratios on vehicle behavior and to consciously choose a differential for your driving style, read the article: Dismantled drive axles and differentials – how to choose gear ratios for your driving style. 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 axles, differentials, or related final drive parts, check the available parts in the Mercedes Differentials category.