BMW Z4 E86 3.0si Rear Axle Differential Diff 3,46 Ratio 7564159 WARRANTY

Listing details

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

BMW Z4 E86 3.0si Rear Axle Differential Diff 3,46 Ratio is a factory drivetrain component from the Differentials group, designed for installation on the rear axle of the BMW Z4 E86 3.0si model. It is responsible for the precise transfer of torque to the rear wheels, ensuring stable handling and predictable vehicle behavior at various speeds.

Specifications and technical data

• SKU: 7564160
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7564160
• Substitutable numbers: 7564160, 33107564160
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented differential is dedicated to the rear axle of the BMW Z4 E86 3.0si and operates as an integral part of the rear axle assembly. It is responsible for distributing drive between the rear wheels, maintaining the correct gear ratio, and supporting traction during acceleration, engine braking, and cornering.

Thanks to the applied 3.46 ratio, the differential provides a balanced compromise between acceleration dynamics and driving comfort at higher speeds, which is particularly important in a sports-touring car like the Z4 E86 3.0si.

Construction and operating characteristics

The rear axle differential in this BMW model is designed as a closed rear axle assembly, ready for installation at factory mounting points. The construction provided by the manufacturer ensures:

• stable transfer of longitudinal and lateral loads in the drivetrain,
• consistent operation with the stock gearbox and other drivetrain components,
• appropriate operating refinement during daily use and dynamic driving.

As an original BMW component, the differential is optimized for the suspension geometry and handling characteristics of the Z4 E86 3.0si, which translates into predictable vehicle behavior in both typical and more demanding road conditions.

Placement on the vehicle and installation aspects

The differential is designed for installation on the rear axle, in the central part of the rear axle assembly, between the drive half-shafts. This placement allows for optimal weight distribution in the drivetrain and proper cooperation with the suspension and electronic stability control system.

As a used OEM component, the differential is a beneficial solution for repairs where structural compatibility with the factory drivetrain is key. It facilitates installation in place of a worn or damaged axle without the need for modifying mounts or suspension geometry.

Practical application and benefits of replacement

Replacing the rear axle differential in a BMW Z4 E86 3.0si is recommended when symptoms such as noise from the axle, noticeable play in the drivetrain, or uneven torque transfer to the wheels occur. Using an original differential with the correct 3.46 ratio allows you to:

• restore the correct acceleration characteristics and engine flexibility,
• maintain the factory drivetrain tuning and predictable handling,
• minimize the risk of improper interaction with the vehicle's electronics.

For users who expect consistent vehicle behavior after a repair, using a differential from the same design group is a technically safe and economically justified solution.

Gear ratio selection and additional technical materials

When selecting a rear axle for a BMW Z4 E86 3.0si, it is crucial to match the gear ratio and ensure compatibility with the vehicle's drivetrain version. The correct choice affects engine performance, RPM at highway speeds, and overall driving comfort. If you want to better understand how the differential ratio affects driving dynamics and economy, it is worth reading the article: Dismantled drive axles and differentials – how to choose ratios for your driving style.

In the process of verifying part compatibility with a specific vehicle, it is also helpful to use OEM numbers and vehicle data. Practical tips on selecting components by manufacturer numbers and vehicle data can be found in the guide: how to choose the right car part by VIN and OEM number.

If you are planning a comprehensive repair or upgrade of the rear axle drivetrain area in your BMW and need other components from the same group, such as additional differentials, rear axles, or related gear assemblies, check out the available parts in the BMW Differentials category.