Mercedes W204 S204 W212 S212 Rear Differential Diff A2123501000 3,27 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 S204 W212 S212 Rear Differential Diff 3,27 is an original rear differential with a 3.27 gear ratio, designed for C-Class and E-Class models, ensuring stable power transmission to the rear axle. This item from the Differentials category is suitable for users expecting precise drivetrain operation and consistency with factory handling characteristics. It is a solution for drivers who want to maintain proper performance, smooth operation, and driving comfort in their Mercedes.

Specifications and technical data

• SKU: A2043500714
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2043500714
• Substitutable numbers: A2043500714, A 204 350 07 14, A2123501000, A 212 350 10 00, 2123501000
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear drive axle with differential is responsible for torque distribution to the rear wheels, maintaining the correct 3.27 gear ratio, and ensuring traction stability under typical road conditions. Its use in Mercedes W204, S204, W212, and S212 series allows for maintaining factory drivetrain tuning, which translates into predictable acceleration, smooth load changes, and comfortable drivetrain operation at highway speeds.

Located at the rear of the vehicle, the differential works directly with the driveshaft and half-shafts, and its correct selection is crucial for the durability of the entire drivetrain system. The appropriate 3.27 gear ratio is particularly important for maintaining the correct engine RPM characteristics relative to vehicle speed.

Benefits of using the 3.27 differential

Using a 3.27 gear ratio differential in a Mercedes W204 or W212 series allows for maintaining a balanced compromise between dynamics and driving economy. In practice, this means:

• factory-consistent acceleration across the full RPM range,
• comfortable drivetrain operation at constant speeds,
• reduction of unwanted vibrations and noise resulting from an incorrect gear ratio,
• proper cooperation with the drivetrain and transmission control electronics.

For users replacing a damaged axle or restoring a car to a near-factory state, such a differential is a technical equivalent of the original configuration, which facilitates installation and subsequent operation without the need for additional modifications.

Installation and operational characteristics

The rear differential with a 3.27 gear ratio is structurally prepared for installation at factory mounting points in the chassis and for cooperation with original drivetrain components. Thanks to this, service work can be carried out in an orderly manner, following standard workshop procedures. Vehicle placement: rear makes it easier to identify the correct component when planning repairs or replacement.

Proper selection of the differential is important not only for performance but also for the durability of the half-shafts, driveshaft, and suspension components. Using an axle with the correct gear ratio reduces mechanical stress, which in the long run leads to lower operating costs and a lower risk of failure of related components.

Condition and origin of the component

The offered differential is a used item, sourced from dismantling, which is an attractive solution for those looking for original parts at a reasonable price. A used drive axle allows for maintaining the vehicle's factory specification while reducing costs compared to purchasing a new component.

For many users of Mercedes W204 and W212 series, using an original aftermarket differential is a way to maintain the car's structural integrity without the need to adapt replacements with different characteristics. This solution is particularly beneficial for accident repairs, replacing a worn-out axle, or restoring a car to full efficiency after long-term use.

Gear ratio selection and technical knowledge

When replacing the rear axle, it is crucial to match the gear ratio to the engine version, transmission, and expected driving style. To better understand the relationship between differential ratio, dynamics, and driving comfort, it is worth checking out our guide: Dismantled drive axles and differentials – how to choose gear ratios for your driving style. The article explains the differences in gear ratios, discusses component compatibility, and provides practical examples of applications in various models.

Related products from the same group

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 axles, differentials with different gear ratios, or complete rear drive assemblies, check out the available parts in the Mercedes Differentials category.