BMW E87 130i N52 E84 18d 20dx N47 Rear Differential Diff 3,46 Ratio WARRANTY

Listing details

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

BMW E87 130i N52 E84 18d 20dx N47 Rear Differential Diff 3,46 Ratio WARRANTY is an original drivetrain component from the Differentials category, designed for installation on the vehicle's rear axle. It ensures precise torque transfer to the wheels, stable handling, and predictable vehicle behavior in various road conditions. This is a solution for users seeking a proven, factory-spec component rather than replacements with uncertain parameters.

Specifications and technical data

• SKU: 7566182
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7566182
• Substitutable numbers: 33107566182, 7566182, 33107557150, 7557150, 3310756618133107557149, 75661817557149
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented rear drive axle is responsible for distributing power to the rear wheels and maintaining the correct gear ratio within the BMW drivetrain. Thanks to the specific gear ratio, the differential influences acceleration characteristics, engine RPM at highway speeds, and the overall refinement of the drivetrain. It is a key element for maintaining factory dynamics and predictable traction, especially in cars used both in city traffic and on longer journeys.

Construction and vehicle placement

The differential is designed for installation in the rear axle area, which is typical for rear-wheel-drive constructions or systems where the rear axle plays a fundamental role in power transmission. Placement at the rear of the vehicle promotes even weight distribution and handling stability, while the properly selected gear ratio translates into smooth acceleration and comfortable drivetrain operation.

Benefits of using an original BMW differential

Using an original BMW differential instead of a worn or damaged part allows you to maintain factory drivetrain performance. The most important advantages include:

• consistency of driving characteristics with the manufacturer's specifications,
• proper cooperation with other drivetrain components,
• stable vehicle behavior during acceleration and engine braking,
• maintaining proper refinement at various engine speeds.

For users who expect predictable handling and want to avoid experimenting with random gear sets, choosing such a component is a safe and technically sound solution. This is particularly important in cars where performance repeatability and compliance with factory settings are valued.

Gear ratio selection and vehicle compatibility

The gear ratio used in this rear axle has a direct impact on how the car reacts to the throttle and on engine RPM at a constant speed. Proper selection of the differential for a specific engine version and transmission allows you to:

• maintain an optimal balance between dynamics and fuel economy,
• avoid excessive noise and vibration resulting from an incorrect gear ratio,
• maintain the correct operation of electronic systems linked to the drivetrain.

Before purchasing, it is worth verifying the compatibility of the differential with your specific vehicle configuration using the OEM part number and interchangeable numbers available in the technical specification. This reduces the risk of mismatch and facilitates the installation process in the workshop.

Condition, origin, and practical application

The offered item is a used part from disassembly, which is an attractive solution for those looking for a compromise between cost and maintaining factory quality. Such differentials are popular choices both for standard replacement of a worn axle and for drivetrain modifications where matching the gear ratio to a specific driving style is important. In practice, this allows for restoring drivetrain efficiency without the need to invest in a new, significantly more expensive component.

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

To better match the axle ratio to your driving style and understand the differences between individual configurations, it is worth checking out the practical tips included in the article Used drive axles and differentials – how to choose gear ratios for your driving style, where selection, compatibility, and operation of used differentials are discussed.