Mercedes W251 Front Axle Differential Flange Carrier 2,92 Ratio A1643302502

Mercedes W251 Front Axle Differential Flange Carrier 2,92 Ratio is an original drivetrain component designed for the front axle assembly in Mercedes W251 class vehicles. Thanks to its factory-spec geometry and precise fit for the specific 2.92 gear ratio, the flange ensures stable torque transmission and proper operation with the differential and axle shafts. This used OEM component is a sensible choice for drivetrain maintenance when you want to maintain factory performance parameters.

Specifications and technical data

• SKU: A1643302502-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1643302502
• Substitutable numbers: A1643302502, A 164 330 25 02
• Location on the vehicle: Front
• Category: Additional Differential Parts

Purpose and function in the drivetrain

The presented differential flange is a component mounted in the front part of the drivetrain, responsible for a rigid and axial connection between the differential and other drive components. The version matched to the 2.92 ratio allows for maintaining the correct operating characteristics of the axle, including:

• proper cooperation with the final drive gear of a specific ratio,
• stable guidance of the shaft and axle half-shafts within the differential housing,
• reduction of backlash and unwanted vibrations in the front-wheel drive.

By maintaining the original design, the flange supports even load distribution within the differential, which is crucial for the durability of the entire drivetrain.

Benefits of using an original Mercedes flange

Using a factory flange in a Mercedes W251 helps avoid problems typical of aftermarket replacements with uncertain specifications. The original component provides, among other things:

• precise fit to the differential housing and mating parts,
• preservation of factory dimensional tolerances and axiality,
• compatibility with the lubrication system and differential seals.

This used OEM component is also a way to optimize repair costs while maintaining the quality characteristic of the Mercedes brand.

Vehicle placement and installation aspects

The flange is intended for installation in the front part of the vehicle, in the area of the front axle differential. During replacement, it is recommended to:

• check the condition of bearings and seals in the differential,
• verify backlash in the drivetrain,
• thoroughly clean the contact surfaces and apply the correct tightening torques.

A correctly installed flange reduces the risk of leaks and excessive wear of mating components, which translates into stable operation of the front axle drive.

Used condition and selecting drivetrain parts

The item comes from the Other differential parts category and is offered in used condition, which allows for economical repair while maintaining the original specification. In the case of comprehensive drivetrain service, it is worth paying attention to matching the differential ratio with other drive components and ensuring proper diagnostics of the entire torque transmission path.

If you want to better understand the relationships between the differential, clutch, dual-mass flywheel, and other drivetrain elements, the following article will be helpful: Clutch and dual-mass flywheel – diagnostics and selection of drivetrain parts, where you will find practical tips on selecting used components as well.

How to reasonably use used drivetrain components

When choosing a used differential flange, it is worth being guided not only by price but also by the origin and compatibility with the specific drive version. A well-chosen component allows you to reduce service costs without sacrificing quality. More practical information on how to safely save on service using used OEM parts can be found in the guide: Rising repair costs and the boom in used parts – how to save on car service?.

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 ring gears, differential housings, or additional mounting hardware, check the available parts in the category Other Mercedes differential parts.