BMW E61 Rear Axle Differential Diff 3,38 Ratio 7542506 WARRANTY

Listing details

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

BMW E61 Rear Axle Differential Diff 3,38 Ratio is an original drivetrain component from the Differentials category, designed for installation on the rear axle. This type of used drive axle allows for maintaining factory handling characteristics, proper torque distribution, and stable vehicle behavior at various speeds. It is a solution for users who expect a proven design and compliance with BMW's factory specifications.

Specifications and technical data

• SKU: 7542507
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7542507
• Substitutable numbers: 7542507, 33107542507, 7542506, 33107542506
• Location on the vehicle: Rear
• Category: Differentials

Technical characteristics and gear ratio

The presented rear differential is designed as an integral part of the BMW rear drive axle, with a specific final drive ratio adapted to the serial parameters of engines and transmissions. A properly selected gear ratio translates into predictable acceleration, stable engine RPM at highway speeds, and consistent operation of the vehicle's electronic systems.

Thanks to its factory design, compatibility with original half-shafts, the driveshaft, and body mounts is maintained. This choice of component limits the need for modifications and allows for installation in accordance with the manufacturer's service documentation.

Purpose and vehicle placement

The differential is intended for installation in the rear of the vehicle, within the rear axle drivetrain assembly. As a component responsible for distributing power to the wheels, it influences:

• traction during starting and acceleration,
• vehicle stability in corners,
• driving comfort under varying drivetrain loads.

Proper placement on the vehicle and factory mounting points facilitate the mechanic's work and shorten replacement time. Using an original differential helps maintain the correct geometry of the drivetrain and reduces the risk of unwanted vibrations.

Benefits of using an original BMW differential

Choosing a used differential from a BMW dismantling is a solution that allows you to combine cost control with maintaining the factory design. Key advantages include:

• Original BMW design – maintaining the drivetrain operating parameters intended by the manufacturer.
• Consistency with the stock suspension and drivetrain – no need for mounting adaptations or additional modifications.
• The ability to restore proper drive operation after a failure or wear of the previous axle.

For users who expect predictable vehicle behavior after a repair, using such a component is a practical way to restore the original driving characteristics.

Selecting a differential for driving style and car configuration

When replacing the rear axle, it is important to match the gear ratio to the engine, transmission, and the expected character of the drivetrain operation. This affects both dynamics and driving economy. If you want to better understand how the differential ratio translates into car behavior, it is worth checking out specialized materials. Practical explanations can be found in the article Dismantled drive axles and differentials – how to choose gear ratios for your driving style, where definitions, configuration examples, and the most common driver questions are discussed.

Expanding repairs within the BMW drivetrain

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 differentials, rear axles, or other drivetrain components, check out the available parts in the BMW Differentials category.

Summary

BMW E61 Rear Axle Differential Diff 3,38 Ratio is a used, original rear drivetrain component that allows you to restore proper drive operation and maintain factory handling characteristics. Thanks to a design consistent with the manufacturer's specifications, it is a practical choice for repairs and rear axle replacements in BMW vehicles where consistency with the serial configuration and predictable vehicle behavior after installation are important.