Mercedes W221 Rear Diff Differential Axle A2213500702 Ratio 2,47 WARRANTY

Listing details

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

Mercedes W221 Rear Diff Differential Axle Ratio 2,47 WARRANTY 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, predictable vehicle handling, and comfortable drivetrain operation even at higher speeds.

Specifications and technical data

• SKU: A2213500702
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213500702
• Substitutable numbers: A2213500702, A 221 350 07 02, A2213501514, A 221 350 15 14
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the rear differential

The presented differential is a component mounted on the rear drive axle, responsible for distributing torque between the wheels and compensating for rotational speed differences during cornering. In Mercedes W221 models, this is crucial for maintaining smooth driving, track stability, and reducing tire wear.

Choosing the correct differential ratio affects:

• acceleration characteristics and flexibility in the mid-RPM range,
• engine RPM at highway speeds,
• acoustic comfort inside the vehicle,
• durability of drivetrain components.

Benefits of using an original Mercedes differential

Using an original differential dedicated to the Mercedes W221 allows you to maintain the vehicle's factory driving characteristics. The design is optimized for the car's weight, engine power, and operation with factory drive control electronics.

Key advantages include:

• Factory fitment to the geometry of the rear suspension and drivetrain,
• preservation of the manufacturer's intended drive performance characteristics,
• reduced risk of compatibility issues with safety systems (e.g., traction control),
• suitability for installation as a direct replacement for a worn or damaged differential.

Technical specifications and installation

The differential belongs to the Differentials group and is intended for installation in the rear of the vehicle. The housing design and mounting points are prepared for integration with factory suspension components and the driveshaft in the Mercedes W221, which facilitates installation in a workshop environment.

Before installation, it is recommended to:

• verify gear ratio compatibility with the vehicle configuration,
• check the condition of the gear oil and replace it if necessary,
• inspect associated components (half-shafts, mounts, bushings),
• properly tighten bolts according to the manufacturer's service procedures.

Condition and practical application

The offered differential is a used component, which in practice represents a favorable compromise between repair costs and maintaining the original manufacturer's specifications. For many Mercedes W221 users, this is a sensible solution when replacing a worn or noisy rear axle, especially in vehicles used intensively or with higher mileage.

To better understand gear ratio selection for driving style and the impact of the differential on vehicle behavior, it is worth reading our guide: Dismantled drive axles and differentials – how to choose ratios for your driving style. The article discusses practical aspects of compatibility, configuration examples, and the most frequently asked questions from drivers.

Expanding your Mercedes 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 other differentials, drive axles, or related transmission parts, check out the available parts in the Mercedes Differentials category.

For a comparison of approaches to repairing various drivetrain components, you can also use our material discussing the merits of using original used parts instead of remanufacturing: Manual transmission failures in cars – why is an original used part a more sensible choice than remanufacturing?. This allows you to better assess when choosing a used differential is technically justified.