BMW E81 E87 E90 E91 E92 Rear Differential Diff 3,15 Ratio 7572804 WARRANTY

We sell this differential with 90 DAYS WARRANTY!!! Differential was checked before taking it out and has been drained of fluid for safety purposes. It is is in full working order.

BMW E81 E87 E90 E91 Axle Differential Rear 3.15 is a used, original drivetrain component, designed for installation on the rear axle of selected BMW 1 and 3 Series models. The product is a functional solution for users looking for a proven differential with a specific gear ratio, ensuring stable power transfer.

Specifications and technical data

• SKU: 7572804
• Mark: BMW
• Condition: Used
• OEM Part Number: 7572804
• Substitutable numbers: 33107591017, 7591017, 33107572805, 7572805, 33107591016, 7591016, 33107572804, 7572804
• Location on the vehicle: Rear
• Category: Differentials

Purpose and compatibility

This differential is designed for rear-wheel drive BMW E81, E87, E90, and E91 models. The differential's design is adapted to the factory mounting points, making installation easy and preserving the vehicle's original suspension geometry and handling characteristics.

This differential belongs to the Differentials - Differentials category, making it ideal for users upgrading or repairing the drivetrain in BMW vehicles. Its 3.15 gear ratio helps balance dynamic acceleration with ride comfort at higher speeds.

Construction and operating parameters

The rear axle is designed as an integrated differential mounted on the vehicle's rear axle. The gear system ensures proper torque distribution to the wheels, resulting in predictable cornering and stability during acceleration.

Key features:

• Location on vehicle: rear – dedicated to rear-wheel drive vehicles.
• Specified 3.15 gear ratio – beneficial for drivers who expect a compromise between flexibility and driving economy.
• Original BMW design – maintaining factory drive system operating parameters.

Additionally, the differential has an assigned OEM part number and interchangeable numbers, which makes it easier to verify compatibility with a specific vehicle configuration in the manufacturer's catalogs or during consultation with a mechanic.

Condition, origin and mileage

The component is offered used, which represents an attractive cost solution compared to new components. The declared mileage of the differential is 95, indicating a limited service life compared to the typical lifespan of this type of component in BMW vehicles.

A used drive axle is a good solution for:

• post-accident repairs and service,
• restoring the car to its factory condition after a differential failure,
• projects where a specific bridge displacement is important.

Benefits of using a 3.15 differential in a BMW

The 3.15 differential ratio in the BMW 1 and 3 Series allows for balanced driving characteristics. In practice, this means:

• smooth acceleration while maintaining reasonable engine speed in higher gears,
• stable torque transfer to the rear wheels, which promotes predictable handling,
• appropriate operation of the drive system in everyday use.

For drivers who modify their BMW to suit their driving style, the choice of differential gear ratio is crucial for the perceived dynamics and comfort – this differential model is a good reference point for a configuration aimed at universal use.

Technical support and selection of the appropriate bridge

Before purchasing, it's worth comparing the differential's markings with the vehicle's specifications and manufacturer's catalogs to confirm full compatibility. Both the OEM part number and available interchange numbers can be helpful, allowing you to quickly verify compatibility with a specific engine and transmission version.

If you are looking for other differentials for BMW, check out our dedicated category of differentials for BMW , where you will find a wide selection of drive axles to suit various models and configurations.

For users who want to better understand the impact of axle ratios on driving characteristics, we recommend the guide article Drive axles and differentials from disassembly – how to choose gear ratios for your driving style , which discusses definitions, gear ratio selection, application examples and practical tips on used drive system components.