BMW E90 LCI E92 330d xDrive N57 Rear Differential Diff 2,47 7571405 WARRANTY

Listing details

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

BMW E90 LCI E92 330d xDrive N57 Rear Differential Diff 2,47 is a factory drivetrain component from the Differentials category, designed for rear axle installation in BMW models equipped with xDrive and the N57 engine. This used final drive unit with the correct gear ratio provides a solid foundation for professional repair or replacement of a worn-out differential, maintaining proper traction characteristics and driving comfort.

Specifications and technical data

• SKU: 7571406
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7571406
• Substitutable numbers: 7571406, 33107571406, 7571405, 33107571405
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is a component of the drivetrain system in BMW 3 Series E90 LCI and E92 generation vehicles with xDrive and the N57 engine. It is responsible for distributing torque to the rear wheels, working in conjunction with the central xDrive system and vehicle electronics. Thanks to the correct final drive ratio, factory parameters for acceleration, engine RPM during highway driving, and handling stability are preserved.

Key technical features of the differential

The rear axle final drive has been designed as an integral part of the BMW drivetrain, maintaining high housing rigidity and precise gear engagement. The differential construction ensures:

• stable torque transfer to the rear wheels while operating with the xDrive system,
• a properly selected final drive ratio, matched to the characteristics of the N57 engine,
• compatibility with factory half-shafts and rear suspension mounts,
• maintenance of proper drivetrain geometry and minimization of vibrations.

As a result, the differential allows for predictable vehicle behavior during both city driving and dynamic highway use.

Practical application and benefits of installation

Using this rear final drive is particularly beneficial in cases of symptoms such as noise from the rear of the vehicle, noticeable drivetrain play, or uneven power delivery to the wheels. Replacing a worn-out differential with an original dismantled part allows you to:

• restore proper drivetrain operation without interfering with vehicle electronics,
• maintain factory handling characteristics and xDrive system performance,
• minimize the risk of additional stress on the transmission and half-shafts,
• maintain the structural integrity of the BMW rear axle.

This solution is particularly attractive for users seeking a technically sound repair while optimizing costs compared to purchasing a new component.

Condition, origin, and fitment

The offered differential comes from a dismantled BMW vehicle and is sold as a used part, allowing for an economical yet technically correct rear axle replacement. Before installation, standard verification of oil condition, seals, and mounting points is recommended, in accordance with BMW service procedures. Due to the preservation of the original design, it is compatible with factory mounts and rear suspension components without the need for modifications.

Technical support and gear ratio selection

Selecting the correct differential for a specific BMW version requires considering the gear ratio, drivetrain type, and engine configuration. To better understand the relationship between the final drive ratio, acceleration characteristics, and driving comfort, it is worth checking our guide: Dismantled final drives and differentials – how to choose gear ratios for your driving style. The article discusses practical aspects of selecting a final drive and differential, which facilitates making an informed purchasing decision.

If you are planning a comprehensive repair or upgrade of the rear axle drivetrain in your BMW and need other components from the same group, such as final drive housings, differentials with different ratios, or complete rear drive assemblies, check the available parts in the BMW Differentials category.