Mercedes W204 W207 W212 Rear Axle Differential Diff 2.82 A2043500214 WARRANTY

Listing details

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

Mercedes W204 W207 W212 Rear Axle Differential Diff 2.82 is an original drivetrain component from the Differentials category, designed for installation on the rear axle of selected mid-size and executive Mercedes models. The precisely selected 2.82 gear ratio promotes smooth, economical driving while maintaining vehicle stability and predictable handling. This is a solution for users who expect factory-standard differential performance and consistency with the rest of the drivetrain system.

Specifications and technical data

• SKU: A2043500214
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2043500214
• Substitutable numbers: A2043500214, A 204 350 02 14
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is structurally matched to the Mercedes platform used in the W204, W207, and W212 series, among others, where it is responsible for distributing torque to the rear wheels. Its placement on the vehicle in the rear axle zone ensures proper power transmission from the driveshaft to the half-shafts, while maintaining correct suspension geometry and system alignment.

The 2.82 gear ratio is typical for configurations focused on comfort, lower engine RPM at highway speeds, and reduced noise and fuel consumption. This gear ratio selection promotes smooth, predictable acceleration characteristics, which is particularly important in premium class cars used both on the highway and in daily city traffic.

Benefits of using an original differential

Using an original rear differential in a Mercedes allows you to maintain factory drivetrain performance parameters without the need for modifications to the suspension, half-shafts, or mounts. This means:

• proper fitment with the rear subframe and body mounting points,
• preservation of factory suspension and drive axle geometry,
• compatibility with stock half-shafts and the driveshaft,
• consistent operation with factory traction control and electronic stability systems.

For the user, this translates into stable handling, predictable vehicle reactions, and no need for interference with additional components. In the case of replacing a worn or damaged differential, installing a unit with the same gear ratio avoids issues with transmission operation, speed readings, or electronic system calibration.

Application in Mercedes W204, W207, W212 models

The differential has been designed for the Mercedes rear-wheel-drive architecture used in popular C-Class and E-Class models, as well as coupe versions. As a result, it is a particularly interesting option for users who:

• experience noise, vibrations, or jerking coming from the rear axle,
• plan to replace a worn differential with a unit featuring the factory gear ratio,
• want to maintain the original driving characteristics without experimenting with other gear sets.

Proper matching of the differential to the specific engine version and transmission is crucial for the durability of the entire drivetrain. Selecting a component with the correct gear ratio limits stress, reduces the risk of excessive clutch or torque converter wear, and ensures proper cooperation with the vehicle's electronics.

Characteristics of the used differential

The offered rear differential is a used component, which in practice means a favorable compromise between purchase cost and maintaining the original Mercedes design. Compared to low-budget replacements, an original differential from dismantling usually better meets the requirements for durability, operating culture, and compatibility with other components.

Before installation, a standard workshop procedure is recommended: checking for leaks, play, the condition of mounts, and – if necessary – changing the oil to the specification recommended by the vehicle manufacturer. This approach allows you to maximize the component's potential and minimize the risk of future service interventions.

Gear ratio selection and technical knowledge – purchase support

If you want to better understand how the differential gear ratio affects vehicle behavior, dynamics, and engine RPM, it is worth consulting specialized materials. A practical discussion of the topic, with examples of configurations and tips on compatibility, can be found in the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which organizes the most important issues in an accessible way.

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 with different gear ratios, or compatible rear-wheel-drive components, check the available parts in the Mercedes Differentials category.