Mercedes ML GL 500 W164 X164 Front Differential Diff 3.70 A1643302202 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 GL 500 W164 X164 Front Differential Diff 3.70 is an original drivetrain component from the Differentials category, designed for front axle installation in gasoline-powered models. This used differential, maintaining the factory 3.70 gear ratio, allows for the precise restoration of drivetrain performance in Mercedes ML and GL W164 / X164 series vehicles without requiring any structural modifications to the vehicle.

Specifications and technical data

• SKU: A1643302202
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1643302202
• Substitutable numbers: A1643302202, A 164 330 22 02
• Location on the vehicle: Front
• Fuel type: Petrol
• Part type: Differential & Housing Assembly
• Category: Differentials

Purpose and function in the drivetrain

The front differential in Mercedes ML and GL models is responsible for distributing torque to the front axle wheels, working in conjunction with the final drive and other all-wheel-drive components. The 3.70 gear ratio is specifically tailored to the characteristics of gasoline engines, ensuring proper acceleration, stability, and smooth drivetrain operation during daily use and highway driving. Mounted at the front of the vehicle, the differential is a key component for maintaining correct axle shaft geometry, proper load distribution, and predictable vehicle behavior in varying traction conditions. Replacing it with a component featuring the correct gear ratio helps avoid unwanted stress within the 4MATIC system and reduces the risk of premature wear on other components.

Application in Mercedes ML / GL 500 W164 X164

The presented differential has been designed specifically for the requirements of the ML 500 and GL 500 models of the W164 / X164 generation with gasoline engines. The appropriate gear ratio configuration and construction adapted for front-axle operation make it a particularly useful solution for:

• repairing the drivetrain following a mechanical failure of the front axle,
• restoring factory traction parameters after the original differential has worn out,
• comprehensive drivetrain rebuilding in vehicles used for towing or in more demanding road conditions. By maintaining the factory operating characteristics, the differential ensures consistent performance of driver assistance systems, such as traction control and electronic stability control, which translates into predictable vehicle handling.

Technical characteristics and benefits of installation

The 3.70 gear ratio differential is optimized for gasoline engines, combining dynamic throttle response with reasonable engine RPM levels at higher speeds. This configuration promotes smooth automatic transmission operation, stable acceleration, and driving comfort over long distances. Key benefits of installing this component include:

• Restoration of factory drivetrain characteristics – the correct gear ratio ensures consistency with the vehicle's original configuration.
• Improved compatibility with the 4x4 system – proper synchronization with other drivetrain components reduces stress and jerking.
• Stable handling – even torque distribution to the front axle improves traction and vehicle predictability.

Condition, origin, and economic aspect

The offered component is sourced from dismantling and is classified as used, representing a reasonable compromise between repair costs and maintaining original construction quality. Choosing a differential from the secondary market allows for a significant reduction in drivetrain repair costs while maintaining compatibility with Mercedes factory solutions. For users who want to better understand gear ratio selection based on driving style and the impact of the drive axle and differential on vehicle behavior, the following article will be helpful: Dismantled drive axles and differentials – how to choose gear ratios for your driving style, which discusses the practical aspects of drivetrain configuration.

Expansion and modernization of the Mercedes drivetrain

If you are planning a comprehensive repair or modernization of your Mercedes drivetrain and need other components from the same group, such as additional differentials, drive axles, or related parts, check out the available parts in the Mercedes Differentials category.