Rear Differential BMW Z4 E89 N20 Diff Final Drive 3,08 Ratio 4608760 WARRANTY

Listing details

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

Rear Differential BMW Z4 E89 N20 Diff Final Drive 3,08 Ratio is a precision drivetrain component from the Differentials category, designed for rear axle installation. The properly selected gear ratio ensures stable torque transfer, predictable vehicle handling, and comfortable drivetrain operation during daily use. This is a solution for users who expect a proven design and the preservation of the factory handling characteristics of the BMW Z4 E89.

Specifications and technical data

• SKU: 7615973
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7615973
• Substitutable numbers: 33107615973, 7615973, 4608760, 7615972
• Location on the vehicle: Rear
• Category: Differentials

Technical characteristics of the BMW Z4 E89 rear differential

The presented final drive is designed as a rear differential for the BMW Z4 E89 generation, with a 3.08 ratio. This final drive configuration promotes smooth, predictable drivetrain operation, reduces excessive engine RPM at highway speeds, and helps maintain the proper balance between dynamics and fuel consumption. The differential design is adapted to the Z4 E89 rear suspension architecture, which translates into proper fitment with half-shafts, mounts, and the differential housing.

Purpose and drivetrain compatibility

The final drive is intended for installation on the rear axle of the vehicle, in a drivetrain with a classic rear-wheel-drive layout. By maintaining the factory 3.08 ratio, the differential allows for the retention of stock transmission and engine performance parameters without the need for electronic control interference. This is particularly important when replacing a damaged final drive with a component of the same specification, especially when aiming to preserve the stock character of the drivetrain and ensure correct cooperation with electronic stability control systems.

Practical application and benefits of installation

Using a differential with a 3.08 ratio in a BMW Z4 E89 is beneficial for drivers who prefer a balanced driving style – from daily commuting to dynamic highway driving. Replacing the final drive with a component of the same specification:

• restores proper power delivery to the rear wheels,
• maintains factory shift points and acceleration characteristics,
• reduces the risk of malfunction in traction control and stability systems,
• ensures consistency with the factory suspension and drivetrain configuration.

For users who are upgrading or repairing their rear drivetrain, such a differential is a logical choice, allowing for the preservation of factory handling parameters and predictable vehicle behavior in corners.

Condition, origin, and installation aspects

The offered differential is a used component, which in practice means it has been removed from a vehicle and verified for further serviceability. These types of components are frequently chosen by BMW users who are looking for a reasonable compromise between repair costs and maintaining the original drivetrain design. Installation of the differential requires standard workshop procedures: removing the old unit, checking mounts and seals, and properly filling it with the oil specification recommended for the given model.

How to choose a differential ratio for your driving style

When replacing the final drive in a BMW Z4 E89, it is crucial to match the ratio to the existing drivetrain configuration and the expected character of the car. The 3.08 ratio is a compromise solution – it allows for comfortable highway driving without excessive noise or high RPM, while maintaining adequate throttle response. If you want to better understand how the differential ratio affects acceleration, top speed, and drivetrain refinement, it is worth checking out our specialist guide: Used final drives and differentials – how to choose the right ratio for your driving style.

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 final drives, differentials, or complete gear assemblies, check out the available parts in the BMW Differentials category.