Mercedes W203 C209 W209 Rear Differential Diff 3,07 Ratio A2093504700 WARRANTY

Listing details

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

Mercedes W203 C209 W209 Rear Differential Diff 3,07 Ratio is an original drivetrain component from the Differentials category, designed for installation on the vehicle's rear axle. Thanks to its factory 3.07 gear ratio, it ensures predictable vehicle behavior, stable torque transfer, and consistency with the drivetrain characteristics of mid-size Mercedes models. This is a solution for users who expect a technically matched drive axle while maintaining favorable traction parameters.

Specifications and technical data

• SKU: A2093501514
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2093501514
• Substitutable numbers: A2093501514, A 209 350 15 14, A2093504700, A 209 350 47 00, 2093504700
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is designed as an integral part of the rear drive axle in Mercedes W203 and W209 series vehicles. It is responsible for torque distribution between the rear wheels, maintaining the correct 3.07 ratio, which translates into balanced acceleration, smooth drivetrain operation, and predictable car behavior in daily use.

Its placement in the rear axle zone allows for direct cooperation with the driveshaft and half-shafts, ensuring consistency with the factory suspension and drivetrain geometry. This type of differential is particularly important for repairs following mechanical damage, replacing a worn-out axle, or adjusting the gear ratio to a specific driving style.

Benefits of using a 3.07 ratio differential

The 3.07 ratio in the rear axle is a compromise between dynamics and driving economy. In practice, this means:

• stable engine RPM at highway speeds,
• appropriate throttle response in typical urban and suburban conditions,
• consistency with factory ECU and transmission settings.

For the user, this means predictable handling and no need to interfere with other drivetrain components during a standard differential replacement. For cars used both in daily driving and on longer trips, such a ratio allows for acoustic comfort and appropriate drivetrain flexibility.

Installation characteristics and fitment

The rear differential from this offer is a used part, sourced from dismantling, which allows for the preservation of the factory design and mounting geometry. As a result, installation in the appropriate versions of the Mercedes W203 and W209 proceeds similarly to the service procedure provided by the manufacturer, without the need for structural modifications.

The product has a dedicated OEM part number and related interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration. Before purchasing, it is worth comparing the differential markings with the vehicle data or consulting a mechanic to ensure full compatibility with the specific engine version and transmission.

Practical application and selection for driving style

The drive axle with a 3.07 ratio works well in cars used in a balanced manner – both in city traffic and on the road. Drivers expecting smooth drivetrain operation, without excessive engine RPM spikes, will appreciate the characteristics of this ratio in daily operation.

If you want to better understand how the rear axle ratio affects dynamics, fuel consumption, and driving comfort, it is worth reading the guide: Used drive axles and differentials – how to choose ratios for your driving style. The article discusses practical examples of differential selection, differences in ratios, and compatibility issues with specific models.

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 transmission components, check out the available parts in the Mercedes Differentials category.

Summary

Mercedes W203 C209 W209 Rear Differential Diff 3,07 Ratio is a technically matched, used rear drivetrain component designed for rear-wheel-drive Mercedes vehicles. It offers a gear ratio suitable for daily operation, maintaining factory drivetrain characteristics and compatibility with the suspension design. Choosing this differential is a practical solution for repairs and axle replacements in W203 and W209 models, allowing for the maintenance of the vehicle's proper traction parameters.