Mercedes W206 M254 Rear Axle Differential Diff 2,64 Ratio A2063507408 WARRANTY

Listing details

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

Mercedes W206 M254 Rear Axle Differential Diff 2,64 Ratio is an original drivetrain component from the Differentials category, designed for installation on the rear axle of Mercedes vehicles equipped with a petrol engine and an automatic transmission. The carefully selected 2.64 ratio ensures balanced acceleration and engine speed parameters, which translates into stable, comfortable, and predictable drivetrain operation. This is a solution for users who expect consistency with factory handling characteristics and a solid foundation for further chassis configuration.

Specifications and technical data

• SKU: A2063507408
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2063507408
• Substitutable numbers: A2063507408, A 206 350 74 08
• Location on the vehicle: Rear
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Differentials

Technical characteristics and 2.64 ratio

The rear axle with differential used in W206 family models with the M254 unit has been designed to work with a petrol powertrain and an automatic transmission. The 2.64 final drive ratio helps lower engine RPM at constant speeds, which in practice means:

• smoother, more linear acceleration characteristics,
• reduced noise and vibration at highway speeds,
• better utilization of the petrol engine's torque curve,
• stable drivetrain behavior in automatic comfort modes.

A differential configured in this way is particularly beneficial for drivers who prefer smooth driving, predictable drivetrain responses, and good refinement during daily use.

Application: rear axle, petrol engine, automatic transmission

The described rear axle has been constructed for operation on the vehicle's rear axle, in a configuration with a petrol engine and an automatic transmission. This setup requires a properly selected differential that:

• ensures correct torque distribution between the rear wheels,
• is adapted to the gear-shifting characteristics of the automatic transmission,
• maintains consistency with factory settings of assistance systems (e.g., electronic stability control and traction control),
• allows for the maintenance of the dynamics and ride comfort intended by the manufacturer.

Thanks to this, installing such a differential is the right solution both for drivetrain repairs and for restoring the vehicle's original specifications after mechanical damage.

Benefits of using an original differential

Using an original rear axle with a differential in a Mercedes W206 with the M254 unit allows for maintaining the integrity of the entire drivetrain. Key advantages include:

• Factory geometry and fitment – proper positioning relative to the suspension and half-shafts, which reduces the risk of premature wear of mating components.
• Compatibility with control software – the 2.64 ratio is accounted for in the calibration of the controllers responsible for drivetrain operation and safety systems.
• Consistent handling characteristics – maintaining the balance between dynamics and comfort intended by the manufacturer, without undesirable changes in vehicle behavior.
• Potential for further configuration – a stable base for potential suspension or braking system modifications, without interfering with key drivetrain parameters.

Component condition and use in service practice

A used rear axle with a differential is a solution frequently chosen by professional workshops specializing in the repair and rebuilding of drivetrains in premium vehicles. This allows for:

• restoring system efficiency after mechanical or operational damage,
• maintaining compliance with factory specifications without the need for costly ratio changes,
• reducing vehicle downtime thanks to the possibility of direct installation of a properly selected differential.

Before installation, it is recommended to perform a standard operational condition verification in a workshop environment and to use the appropriate transmission oil in accordance with the vehicle manufacturer's guidelines.

Ratio selection and additional technical materials

The correct selection of the rear axle ratio has a direct impact on driving characteristics, fuel consumption, and the load on drivetrain components. In the case of vehicles with an automatic transmission and a petrol engine, it is particularly important to maintain consistency between the differential ratio and the software controlling the transmission and engine. If you want to deepen your knowledge about drive axle configuration, the relationship between gear ratios and driving style, as well as practical aspects of selecting used components, it is worth reading the article Dismantled drive axles and differentials – how to choose ratios for your driving style.

Other differentials for Mercedes

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 different axle configurations, differentials with different ratios, or complete rear-drive assemblies, check the available parts in the Mercedes Differentials category.