Mercedes-Benz W203 W210 Rear Differential Diff 2,87 Ratio A2033505414 WARRANTY

Mercedes-Benz W203 W210 Rear Differential Diff 2,87 Ratio is a precision drivetrain component designed for rear-axle operation in popular C-Class and E-Class models. The carefully selected gear ratio ensures stable torque transfer, predictable vehicle handling, and comfortable drivetrain operation during daily use. This is the ideal solution for users who expect consistency with factory driving characteristics and wish to maintain the proper operating parameters of the rear axle.

Specifications and technical data

• SKU: A2033505414
• Mark: Mercedes (Genuine OE)
• OEM Part Number: A2033505414
• Substitutable numbers: A2033505414, A 203 350 54 14
• Location on the vehicle: Rear
• Category: Additional Differential Parts

Purpose and function in the drivetrain

The described rear differential is intended for installation on the rear axle of Mercedes C-Class W203 and E-Class W210 vehicles. It is responsible for distributing power to the rear wheels, maintaining the correct gear ratio, and smoothly transferring loads during acceleration, engine braking, and constant-speed driving. The 2.87 gear ratio promotes calm, economical driving by reducing engine RPM at highway speeds and improving the overall refinement of the drivetrain.

Benefits of using the correct differential

Selecting the right differential for a specific Mercedes version is crucial for maintaining the vehicle's factory characteristics. Using this component allows you to:

• maintain proper acceleration dynamics and flexibility across the entire RPM range,
• preserve predictable, neutral vehicle handling at various speeds,
• minimize unwanted vibrations and noise within the rear drivetrain,
• reduce wear on mating components, such as the driveshaft or half-shafts.

For the user, this means more consistent drivetrain operation, better acoustic comfort, and stable vehicle behavior in both city traffic and highway driving.

Compatibility and vehicle fitment

The rear differential has been developed with the suspension and drivetrain architecture of the W203 and W210 models in mind, ensuring proper fitment with factory mounting points and correct integration with the driveshaft and half-shafts. Before installation, it is recommended to verify compatibility with the specific engine and transmission version to ensure the correct overall gear ratio and avoid drivetrain irregularities.

Professional installation and operation

Due to the nature of this component and its impact on safety and drivetrain durability, installation in a specialized workshop is recommended to ensure:

• correct alignment and tightening of mounting points,
• inspection of mating rear suspension and drivetrain components,
• selection of the appropriate gear oil in accordance with manufacturer recommendations.

This approach allows you to fully utilize the structural potential of the differential and reduce the risk of premature wear or improper system operation.

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 axle housings, mounts, or additional gears, check out the available parts in the Other Mercedes differential parts category.

For owners of C-Class and E-Class models who want to better understand the specifics of accessories and related components, our blog article may be helpful: Reliability under the star – how to care for engine accessories in popular Mercedes-Benz C-Class and E-Class models?.

If you are interested in a broader context of vehicle modification using salvaged components, including the impact of gear ratios and drivetrain elements on the car's character, also check out our guide: Emotions and design – visual and mechanical tuning of a Seat using salvaged components.