Mercedes ML W166 Front Axle Differential Diff 3,27 Ratio A1663300200 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 W166 Front Axle Differential Diff 3,27 Ratio is an original drivetrain component from the Differentials category, designed for installation on the front axle. This is a solution for users who expect stable drivetrain performance, proper interaction with the vehicle's electronics, and the preservation of factory gear ratio characteristics.

Specifications and technical data

• SKU: A1663300200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1663300200
• Substitutable numbers: A1663300200, A 166 330 02 00
• Location on the vehicle: Front
• Category: Differentials

Purpose and function in the drivetrain

The front differential in the Mercedes ML W166 is responsible for distributing torque between the front wheels, ensuring smooth cornering and predictable vehicle behavior in various road conditions. The applied 3,27 ratio allows for maintaining factory dynamics, drivetrain refinement, and compatibility with the vehicle's control software.

The placement on the vehicle, defined as front, means that the component works directly with the front half-shafts and the transmission or transfer case, depending on the specific drivetrain configuration of the given ML W166 unit.

Benefits of using an original differential

Using an original Mercedes differential allows you to maintain:

• factory gear ratio, which reduces the risk of errors in ABS, ESP, and 4MATIC systems,
• proper cooperation with the existing drivetrain,
• consistent operating parameters with the rear axle and transmission.

A component from this group is particularly important for repairs following mechanical damage (e.g., bearing failure, seizing, gear tooth damage) and when replacing worn parts in vehicles used for towing or in more demanding conditions.

Product characteristics and condition

The offered differential belongs to the Differentials category and is a used part, sourced from dismantling. Such components are a popular choice for repairs where maintaining the original design is crucial, while simultaneously optimizing costs compared to purchasing a new part.

The front differential for the ML W166 is suitable for users who expect to maintain factory handling characteristics, without interfering with controller software and without the need to modify other drivetrain components.

Gear ratio selection and vehicle compatibility

When replacing the front axle in a Mercedes ML W166, it is crucial to match the gear ratio to the vehicle's configuration and the rear axle ratio. Incorrect selection can result in improper drivetrain operation, overloads, and electronic system errors. Therefore, before purchasing, it is worth verifying the gear ratio compatibility with the current car configuration and the part numbers of the axles used.

To better understand the relationships between differential ratio, acceleration characteristics, and engine speed, it is worth checking out the guide: Dismantled drive axles and differentials – how to choose ratios for your driving style. The article practically discusses gear ratio selection, component compatibility, and typical configurations used in modern cars.

Expansion and modernization of the Mercedes drivetrain

If you are planning a comprehensive repair or modernization of the drivetrain area in your Mercedes and need other elements from the same group, such as front axles, rear differentials, or transfer cases, check the available parts in the Mercedes Differentials category.

Summary of application in Mercedes ML W166

Mercedes ML W166 Front Axle Differential Diff 3,27 Ratio is a solution for drivers who want to restore proper drivetrain operation in their SUV while maintaining factory gear ratio parameters. The original design from the Mercedes differential group facilitates trouble-free installation and proper cooperation with existing components, which is important both for repairs after a failure and for the planned replacement of worn drivetrain elements.