Mercedes W205 Propshaft Prop Shaft Rear OM651 Automatic A2054100502

Mercedes W205 Propshaft Prop Shaft Rear OM651 Automatic is an original drivetrain component belonging to the Cardan joints category. Designed specifically for the rear axle in W205 generation C-Class models with an automatic transmission, it ensures stable torque transmission and proper compatibility with the factory suspension and drivetrain.

Specifications and technical data

• SKU: A2054100502
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2054100502
• Substitutable numbers: A2054100502, A 205 410 05 02
• Location on the vehicle: Rear
• Gearbox type: Automatic
• Category: Propshafts

Purpose and function in the drivetrain

The presented propshaft is a component mounted in the rear part of the vehicle, responsible for transmitting torque from the transmission to the rear axle in Mercedes C-Class W205 cars with the OM651 engine and automatic transmission. By using Cardan joints, it compensates for changes in operating angles resulting from suspension movement, reducing vibrations and noise in the cabin.

Selecting the correct shaft for a specific drivetrain configuration (OM651 engine and automatic transmission) is crucial for the durability of the entire system, correct geometry, and driving safety. The original design ensures compatibility with factory mounting points and proper dynamic balancing.

Technical construction and advantages of Cardan joints

The shaft belongs to the Cardan joints group, which means it utilizes universal joints that allow for power transmission at variable operating angles. This type of solution:

• ensures smooth torque transmission during suspension movement,
• reduces overloads in the drivetrain,
• limits the risk of unwanted vibrations and knocking,
• maintains stable operation of the rear-wheel drive across a wide range of loads.

Thanks to its factory geometry and fitment for the W205 platform, the shaft works seamlessly with original suspension and rear axle components, which facilitates installation and maintenance.

Condition, fitment, and service application

The item is offered as a used part, which allows for an economical repair of the drivetrain while maintaining the manufacturer's original specifications. This is a practical solution in situations such as:

• mechanical damage to the shaft (e.g., after a collision or hitting an obstacle),
• excessive play in the Cardan joints causing vibrations,
• the need for replacement due to wear and tear.

Choosing the right propshaft for a Mercedes W205 with an OM651 engine and automatic transmission minimizes the risk of problems with balancing, leaks, or improper drivetrain operation at higher speeds.

Benefits of using an original propshaft

Using an original propshaft in a Mercedes C-Class W205 brings a number of measurable service and operational benefits:

• Factory fitment – compatibility with the chassis design, mounting points, and drivetrain geometry.
• Stable system operation – reduction of vibrations, noise, and jerking during acceleration and load changes.
• Hassle-free installation – no need for modifications, length adjustments, or changing mounts.
• Consistency with the automatic transmission – proper cooperation with the operating characteristics of the automatic gearbox in the configuration with the OM651 engine.

For workshops and users, this means shorter repair times, predictable service results, and the preservation of the vehicle's proper handling characteristics.

Repair expansion and auxiliary materials

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other elements from the same group, such as intermediate shafts, universal joints, or shaft supports, check the available parts in the Mercedes Cardan joints category.

When planning work on the drivetrain and suspension, it is also worth checking out practical tips regarding the selection of used components – the article Stock vs. sports suspension – design differences and is it worth buying used suspension parts? may be helpful, as it facilitates an informed approach to vehicle service and modernization.