Mercedes C Class W203 220CDI Rear Differential Diff 2,87 Ratio WARRANTY

Mercedes C Class W203 220CDI Rear Differential Diff 2,87 Ratio WARRANTY with a 2.87 gear ratio is a precision-engineered drivetrain component, dedicated to the rear axle in diesel models. It is responsible for the efficient transfer of torque to the wheels, ensuring stable traction, predictable vehicle handling, and comfortable drivetrain operation during daily use.

Specifications and technical data

• SKU: A2033502764
• Mark: Mercedes (Genuine OE)
• OEM Part Number: A2033502764
• Substitutable numbers: A2033502764, A 203 350 27 64, 2033508464, A 203 350 84 64
• Location on the vehicle: Rear
• Category: Additional Differential Parts

Purpose and function in the drivetrain

The presented differential is designed for installation on the rear axle of the vehicle, where it plays a key role in distributing torque between the wheels. The 2.87 gear ratio promotes smooth, economical driving by lowering engine RPM at highway speeds and improving the overall refinement of the drivetrain.

When combined with a properly matched transmission and engine control system, a differential with this gear ratio allows for:

• smooth acceleration without jerking,
• stable vehicle behavior at higher speeds,
• a balanced compromise between performance and fuel consumption.

Benefits of using an original Mercedes differential

The original differential dedicated to the C Class W203 220CDI ensures full compliance with the manufacturer's factory specifications. This means:

• proper fitment to rear suspension mounts,
• compatibility with factory half-shafts and the driveshaft,
• no need for structural modifications during installation.

As a result, installation is predictable, and the risk of improper drivetrain operation after replacement is minimized. The factory 2.87 gear ratio allows you to maintain the driving characteristics known from the original vehicle configuration, which is particularly important for handling stability and the operation of driver assistance systems.

Professional selection and installation

To fully utilize the potential of this differential, it is worth ensuring professional selection based on the engine version and the transmission used. Installation in a specialized workshop is recommended, where attention will be paid to, among other things:

• the condition of mounts and bushings in the rear subframe,
• proper tightening of bolts in accordance with manufacturer recommendations,
• checking the tightness of connections and the oil level in the gearbox.

This approach minimizes the risk of noise, vibrations, or premature wear of mating components, and also extends the service life of the entire drivetrain.

Technical support and related items

When replacing the differential, it is worth simultaneously checking other rear drivetrain components, such as half-shafts, wheel bearings, or suspension elements. If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other items from the same group, such as additional gears, housings, or mounts, check the available parts in the Other Mercedes differential parts category.

If you want to better understand how the selection of used components affects safety and vehicle maintenance costs, it is worth reading the guide on our blog: Brake calipers under the microscope: how to reduce repair costs by choosing verified recycled parts. The tips contained therein concern the approach to original recycled parts and can also be helpful when planning work on the drivetrain.

Summary

Mercedes C Class W203 220CDI Rear Differential Diff 2,87 Ratio WARRANTY is a solution for users who expect compliance with factory specifications, predictable handling, and smooth drivetrain characteristics. Properly selected and installed, it provides a solid foundation for further vehicle operation, reducing the risk of unwanted vibrations, noise, and uneven wear of chassis components.