Mercedes ML 63 W164 AMG Front Differential Diff 3,45 Ratio A1643302702 WARRANTY

Listing details

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

Mercedes ML 63 W164 AMG Front Differential Diff 3,45 Ratio is a factory drivetrain component from the Differentials category, designed for installation on the vehicle's front axle. It is responsible for the precise distribution of torque between the wheels, which translates into stable handling and predictable vehicle behavior in various road conditions. This solution allows for maintaining the drivetrain refinement characteristic of the Mercedes brand and consistency with the factory 3.45 gear ratio configuration.

Specifications and technical data

• SKU: A1643302702
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1643302702
• Substitutable numbers: A1643302702, A 164 330 27 02
• Location on the vehicle: Front
• Category: Differentials

Purpose and function in the drivetrain

The front differential in the Mercedes ML W164 model is a key component of the drivetrain system, working in conjunction with the final drive and half-shafts. It is responsible for:

• distributing torque between the left and right front wheels,
• maintaining the correct 3.45 gear ratio in the front drive module,
• stable vehicle behavior during acceleration, engine braking, and cornering.

By maintaining the factory gear ratio, the differential allows for consistent operation with other drivetrain components, which is important for both durability and driving comfort.

Benefits of using an original differential

Using a front differential dedicated to the Mercedes ML W164 provides a number of practical installation and operational benefits:

• Factory geometry and mounting points – facilitate installation in place of a worn component without the need for modifications.
• Consistency with the original drivetrain – maintaining the correct traction characteristics and operation of assistance systems (e.g., traction control).
• Properly selected 3.45 gear ratio – beneficial for the balance between dynamics and fuel economy.

A differential configured in this way allows for restoring proper drivetrain operation in a vehicle where the previous component has become worn or damaged.

Vehicle placement and installation aspects

The differential is designed for installation on the front axle, in an axial connection with the drive shaft and half-shafts. In practice, this means that during replacement, attention should be paid to:

• correct alignment with the subframe and suspension mounts,
• tightness of connections with the half-shafts and drive shaft,
• selection of the appropriate gear oil in accordance with the vehicle manufacturer's recommendations.

Proper installation of the front differential has a direct impact on drivetrain refinement, noise levels, and the durability of the entire power transmission system.

Product characteristics and condition

The offered item is used, which in practice means it has been removed from a vehicle and is intended for further use after proper installation and potential service maintenance (e.g., oil change). For vehicles such as the Mercedes ML W164, this is a solution that allows for economical repair while maintaining the original drivetrain design.

Before installation, it is recommended to verify the gear ratio compatibility with the rear differential and the gearbox to ensure uniform operation of the entire drivetrain and avoid overloading individual components.

Gear ratio selection and technical knowledge

Proper selection of a differential for your driving style and drivetrain configuration is essential for vehicle dynamics and comfort. If you want to better understand how the 3.45 ratio affects car behavior, what the differences are between individual axle variants, and how to safely select used parts, it is worth consulting specialist materials. A practical discussion of the topic can be found in the article Used drive axles and differentials – how to choose gear ratios for your driving style, which describes definitions, configuration examples, and the most frequently asked user questions.

Expanding repairs within the 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 front differentials, rear differentials, or axle components, check out the available parts in the Mercedes Differentials category.