Propshaft Mercedes ML350 W166 Diesel OM642 4matic Automatic Transmission

Propshaft Mercedes ML350 W166 Diesel OM642 4matic Automatic Transmission is a component from the Cardan Joints group, designed for the drivetrain in diesel versions with an automatic transmission. It is responsible for stable torque transmission in the 4MATIC system, ensuring smooth cooperation between the gearbox and the drivetrain. This solution is dedicated to users expecting a precisely matched component for a specific ML350 W166 configuration.

Specifications and technical data

• SKU: A1664103900
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1664103900
• Substitutable numbers: A1664103900, A 166 410 39 00
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Propshafts

Application in Mercedes ML350 W166 with 4MATIC drive

The presented propshaft is intended for Mercedes ML350 W166 generation vehicles with the OM642 diesel engine and 4MATIC drive combined with an automatic transmission. This configuration requires a properly selected element from the Cardan Joints group, which works with the drivetrain under loads typical for a premium SUV.

Thanks to a design adapted to the characteristics of the diesel unit and the automatic transmission, the shaft ensures:

• stable torque transmission across the entire RPM range,
• proper cooperation with the all-wheel-drive system,
• maintenance of the correct drivetrain geometry.

Technical and functional characteristics

The propshaft in this model operates under demanding conditions – with variable loads, during acceleration, engine braking, and off-road driving. The use of universal joints and flexible elements included in this group allows for compensating for suspension and body movements, minimizing vibrations transmitted to the drivetrain.

In practice, this means:

• increased refinement of the drivetrain operation,
• reduction of unwanted noises and knocks resulting from drivetrain play,
• better cooperation with traction control and electronic stability programs.

For vehicles with a diesel engine and an automatic transmission, the correct selection of the propshaft is crucial for the durability of the entire system and driving comfort.

Benefits of using a dedicated propshaft

Using a shaft matched to a specific ML350 W166 version allows for maintaining the factory performance parameters of the 4MATIC drive. The appropriate length, geometry, and joint characteristics translate into predictable vehicle behavior both on asphalt and on surfaces with lower grip.

The main advantages include:

• compatibility with the drivetrain in diesel versions with an automatic transmission,
• consistency with factory settings of the drive control electronics,
• the ability to restore proper system operation in case of wear of the previous component.

This solution is particularly beneficial for symptoms such as vibrations during acceleration, knocks when changing loads, or noticeable play in the drivetrain.

Information about condition and purpose

The offered propshaft is a used part, which allows for economical repair while maintaining the correct fit for the specific vehicle configuration. For many ML350 W166 units, this is a rational way to restore proper drive operation without the need to invest in a new component.

This solution will work well both in daily driven cars and in vehicles maintained for longer service life, where it is important to maintain consistency with the original drivetrain design.

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, flexible couplings, or universal joints, check the available parts in the Mercedes Cardan Joints category.

For owners of older premium class vehicles who want to consciously use the potential of used components and plan long-term operation of their cars, it is worth checking out the guide describing strategies for refreshing vehicles from the 1998–2012 period – details can be found in the article Second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.