BMW X3 M F97 X4 M F98 S58 Rear Axle Differential Diff 3,15 8047172 WARRANTY

Listing details

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

BMW X3 M F97 X4 M F98 S58 Rear Axle Differential Diff 3,15 is an original drivetrain component from the Differentials category, designed for installation on the rear axle of the sporty BMW X3 M F97 and X4 M F98 models equipped with the S58 engine. This used rear differential with the correct gear ratio provides a solid foundation for professional drivetrain repair or modification, ensuring proper torque transfer to the wheels. Thanks to its OEM factory design, compatibility with the vehicle's factory systems and predictable vehicle behavior during dynamic driving are maintained.

Specifications and technical data

• SKU: 8047172
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8047172
• Substitutable numbers: 8047172, 33108047172
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented rear differential is a key component of the drivetrain system in high-performance versions of the BMW X3 M F97 and X4 M F98 with the S58 engine. It is responsible for distributing torque to the rear wheels and working in conjunction with advanced traction and stability systems, which directly impacts vehicle handling, grip, and stability at high speeds.

Selecting a differential with the correct gear ratio is particularly important in high-power vehicles, where both acceleration and driving comfort at highway speeds are crucial. Using the correct rear differential allows for maintaining the factory drivetrain characteristics and proper interaction with the vehicle's electronics.

Design and vehicle placement

The differential is designed as an integral part of the rear drivetrain system, located on the rear axle of the vehicle. The construction is intended to work with the factory half-shafts, driveshaft, and suspension of the X3 M F97 and X4 M F98 models, which facilitates installation in place of the original component without the need for interfering with suspension geometry or additional modifications.

As an OEM BMW part, the rear differential is adapted to the loads generated by the S58 engine, taking into account the high torque and dynamic nature of these models. As a result, it can be used both in daily-driven cars and in vehicles used in more demanding conditions, such as track driving.

Practical application and gear ratio selection

This type of differential is particularly recommended in situations where it is necessary to:

• replace a damaged or worn rear differential in a BMW X3 M F97 or X4 M F98,
• restore factory drivetrain performance parameters after a collision or failure,
• maintain gear ratio consistency with the vehicle's original configuration.

The correct choice of gear ratio affects acceleration characteristics, engine RPM at constant speeds, and interaction with the transmission and traction control systems. To better understand the relationship between the differential ratio and driving style, it is worth reading the guide: Dismantled drive axles and differentials – how to choose ratios for your driving style, where practical examples and the most common configurations are discussed.

Condition, origin, and installation aspects

The offered differential is a used component, sourced from dismantling, which allows for economical repair while maintaining the original BMW specification. Such components are frequently chosen by workshops specializing in the BMW brand and by informed users who prefer factory solutions over aftermarket replacements of unknown origin.

Before installation, a standard workshop procedure is recommended: verifying seals, checking for play, and assessing the condition of the gear oil. Professional installation at a specialized BMW service center or a drivetrain workshop will allow you to fully utilize the potential of this component and minimize the risk of future failures.

Expanding the BMW drivetrain – Differentials

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as additional axles, differentials with different ratios, or compatible rear-drive components, check out the available parts in the BMW Differentials category.

Summary

BMW X3 M F97 X4 M F98 S58 Rear Axle Differential Diff 3,15 is the right choice for users and workshops that want to restore full drivetrain efficiency in high-performance X3 M and X4 M versions while maintaining factory design solutions. The used, original rear differential ensures proper cooperation with the S58 engine and the vehicle's electronic systems, providing a technically consistent solution for professional repair or restoring the stock drivetrain configuration.