Mercedes-Benz S-Class W221 Rear Diff Differential 2,47 A2213501602 WARRANTY

Listing details

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

Mercedes-Benz S-Class W221 Rear Diff Differential 2,47 is an original rear differential from the Differentials category, designed for the drive axle of luxury Mercedes S-Class W221 generation sedans. The carefully selected gear ratio ensures stable torque transfer and predictable vehicle behavior at higher speeds and during relaxed driving. A used differential of this type is a sensible choice for professional drivetrain repairs where structural compatibility and cost-effectiveness are priorities.

Specifications and technical data

• SKU: A2213501514
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213501514
• Substitutable numbers: A2213501514, A 221 350 15 14, A2213501602, A 221 350 16 02
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented differential is a component of the rear drive axle, responsible for distributing torque between the wheels and maintaining the correct gear ratio of the entire drivetrain. In Mercedes W221 models, it is crucial for:

• smooth acceleration without jerking,
• drivetrain stability during load changes,
• reducing noise and vibrations transmitted to the body.

Selecting a differential with the correct gear ratio is particularly important in high-end vehicles, where comfortable, predictable drivetrain operation and consistency with the factory characteristics of the engine and transmission are expected.

Construction and technical characteristics

The differential used in the Mercedes W221 is a classic rear axle design, engineered for high durability and resistance to long-term loads. The design solutions provide:

• stable torque transfer to the rear wheels,
• a properly selected final drive ratio that promotes smooth, economical driving,
• compatibility with the factory suspension and rear axle half-shafts.

Thanks to the preservation of original geometry and mounting points, the differential is intended for installation in place of the factory component without the need for modifications to the body or suspension structure.

Benefits of using an original differential

Using an original differential from disassembly in a Mercedes W221 allows for the preservation of factory drivetrain performance parameters. Key advantages include:

• maintaining the factory gear ratio – no changes in acceleration characteristics or engine RPM at highway speeds,
• reliable structural fit – compatibility with factory mounting points and the half-shaft system,
• the possibility of professional refurbishment in the future, if necessary,
• an optimal compromise between repair cost and component durability.

A used differential of this class is a particularly attractive solution for post-accident repairs or when replacing a worn drive axle, where the priority is to maintain the vehicle's original specifications.

Vehicle placement and installation aspects

The differential is designed for installation on the rear axle of the vehicle, in the central part of the drivetrain. In practice, this means it works with the driveshaft from the transmission side and the half-shafts leading to the rear wheels. When replacing, it is worth paying attention to:

• the condition of the differential mounts and suspension bushings,
• the tightness of connections with the half-shafts and driveshaft,
• the selection of the appropriate gear oil in accordance with the vehicle manufacturer's recommendations.

Professional installation, maintaining the correct bolt tightening torque and proper alignment of the component in the subframe, helps reduce the risk of noise, vibration, and accelerated wear of cooperating components.

Gear ratio selection and vehicle compatibility

The differential gear ratio has a direct impact on driving characteristics – engine RPM at a given speed, acceleration dynamics, and acoustic comfort. In the case of the Mercedes W221, the correct selection of the drive axle is particularly important to maintain factory driving sensations and proper cooperation with the vehicle's electronics.

To better understand the relationships between gear ratios, driving style, and drive axle selection, it is worth reading the guide: Drive axles and differentials from disassembly – how to choose gear ratios for your driving style. The article discusses definitions, configuration examples, and practical tips regarding component compatibility in an accessible, technical way.

How to safely choose a used differential

When choosing a used differential for a Mercedes W221, it is crucial to verify compatibility with the vehicle based on the OEM part number and interchangeable numbers, as well as to check the placement on the vehicle. It is also worth paying attention to:

• the history of the component's origin (disassembled from a complete vehicle),
• the absence of visible damage to the housing,
• the ability to rotate the input and outputs without noticeable binding.

Practical tips on choosing used components, including the importance of OEM and reference numbers, can be found in the guide: how to professionally choose used car parts, saving time and stress. This is a helpful supplement when planning a drivetrain repair.

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, final drives, or complete differentials, check the available parts in the Mercedes Differentials category.