Mercedes W220 4-Matic Rear Differential Diff Ratio 3.07 A2203507714 WARRANTY

Listing details

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

Mercedes W220 4-Matic Rear Differential Diff Ratio 3.07 is an original drivetrain component designed for the rear axle of S-Class models with 4Matic all-wheel drive. The precisely selected 3.07 gear ratio ensures proper drivetrain performance, handling stability, and predictable vehicle behavior in typical road conditions. This solution is dedicated to vehicles with gasoline engines and automatic transmissions, maintaining the original factory design specifications.

Specifications and technical data

• SKU: A2203507714
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2203507714
• Substitutable numbers: A2203507714, A 220 350 77 14
• Location on the vehicle: Rear
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Differentials

Purpose and technical characteristics

The presented rear differential is a component of the rear axle drivetrain in Mercedes S-Class W220 generation models with 4Matic drive. The applied 3.07 gear ratio was factory-selected to work with gasoline units and automatic transmissions, which translates into consistent operation of the entire drivetrain. This gear ratio selection supports smooth acceleration, comfortable transmission operation, and stable engine RPM at highway speeds.

The differential belongs to the Differentials category, which are key components responsible for distributing torque between the wheels of the driven axle. In the case of the 4Matic system, a correctly selected rear differential is crucial for cooperation with other drivetrain components, including the main gear and the central drive distribution unit.

Compatibility with 4Matic, gasoline engines, and automatic transmissions

The differential has been designed to work with gasoline engines, meaning it is matched to the torque characteristics typical of such units. Integration with an automatic transmission ensures harmonious gear shifting, without unwanted jerks or excessive rotational speed differences between the axles.

In practice, the correct rear differential ratio affects:

• maintaining proper engine RPM at a given driving speed,
• stable cooperation with the 4Matic system in conditions with varying grip,
• even load distribution in the drivetrain,
• predictable vehicle behavior during acceleration and deceleration.

Thanks to this, the differential constitutes a technically coherent element for the gasoline + automatic + all-wheel drive configuration, maintaining the vehicle manufacturer's specifications.

Practical application and installation benefits

Using an original rear differential in a Mercedes W220 4Matic allows for maintaining the factory drivetrain performance parameters without the need for changes in electronics or transmission control. This is particularly important for repairs where maintaining compliance with service documentation and predictable vehicle behavior is a priority.

The main benefits of installation include:

• maintaining the factory rear axle gear ratio,
• consistent cooperation with the 4Matic drive,
• proper matching to the gasoline engine characteristics,
• compatibility with the automatic transmission without additional modifications.

The part comes from dismantling, which in practice means the possibility of an economical repair while maintaining the original design of the drivetrain.

Gear ratio selection and technical knowledge

When replacing a differential, it is crucial to ensure the gear ratio matches the vehicle's factory configuration. Incorrect selection may result in improper operation of assistance systems, errors in automatic transmission operation, or a noticeable decrease in driving comfort. Therefore, it is worth verifying the vehicle's technical parameters and comparing them with the differential's data before purchasing.

To better understand the relationship between the drive axle ratio, engine characteristics, and driving style, the article describing gear ratio selection and drivetrain component compatibility may be helpful – you can find a detailed discussion in the material Dismantled drive axles and differentials – how to choose gear ratios for your driving style.

Expanding the Mercedes drivetrain

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