Mercedes C216 W221 4MATIC Rear Axle Differential Diff 2,65 A2213503904 WARRANTY

Listing details

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

Mercedes C216 W221 4MATIC Rear Axle Differential Diff 2,65 is an original rear drive axle with all-wheel drive, designed for luxury high-class Mercedes models. This component ensures precise torque transmission to the rear wheels, stable operation of the 4MATIC system, and predictable vehicle behavior in various road conditions. It is a solution for users who expect consistent handling characteristics and the maintenance of factory drivetrain parameters.

Specifications and technical data

• SKU: A2213502614
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2213502614
• Substitutable numbers: A2213502614, A 221 350 26 14, A2213503904, A 221 350 39 04
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is a component of the drivetrain in Mercedes vehicles with C216 and W221 bodies equipped with the 4MATIC system. It is responsible for distributing torque to the left and right rear wheels, working in conjunction with the central drivetrain and vehicle electronics. As a result, the car maintains stability during acceleration, engine braking, and cornering, while the driver receives predictable, comfortable handling characteristics.

The 2.65 gear ratio promotes calm, smooth driving with an emphasis on comfort and lower engine RPM at highway speeds. For users who want to maintain the factory drivetrain tuning, using a differential with this ratio allows for the preservation of original operating parameters for the transmission, assistance systems, and traction control.

Construction and vehicle placement

The differential belongs to the Differentials category and is mounted in the rear part of the vehicle, on the drive axle. The design is intended for use with the 4MATIC system, which means it features a specifically matched housing, mounts, and internal configuration of bevel gears and the differential mechanism. Its placement on the rear axle ensures a direct connection to the half-shafts and proper cooperation with the suspension and electronic stability control system.

As an original Mercedes component, the differential retains factory mounting points, which facilitates installation and reduces the need for additional modifications. For workshops and service centers, this means predictable labor time, and for the user – greater confidence in proper fitment for the specific vehicle configuration.

Performance characteristics and benefits

Using this rear axle in the drivetrain allows for maintaining the consistent operation of all components responsible for traction. In practice, this translates into:

• stable torque transmission to the rear wheels under various loads,
• proper cooperation with safety systems (traction control, electronic stability control),
• comfortable acceleration and engine braking characteristics,
• maintenance of the factory balance between the front and rear axles in the 4MATIC system.

A used differential of this type is an attractive solution for drivers who want to restore full drivetrain efficiency after a failure or wear of the existing axle, while maintaining the original manufacturer's specification without interfering with gear ratios or driving characteristics.

Differential selection and vehicle compatibility

When selecting a differential for a Mercedes C216 or W221 with 4MATIC, it is crucial to match the gear ratio, drive version, and axle configuration. Proper selection ensures correct cooperation with the existing transmission, driveshaft, and control electronics. It is worth paying attention to compatibility with factory manufacturer markings and interchangeable part numbers, which allow for confirming compatibility with a specific engine version and model year.

To better understand the relationship between the axle ratio and driving characteristics, it is worth consulting a practical overview of the topic. Detailed explanations can be found in the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which describes various configurations, application examples, and the most frequently asked questions from drivers.

Expanding the Mercedes drivetrain

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 additional differentials, drive axles, or related parts, check out the available parts in the Mercedes Differentials category.