BMW E63 E64 LCI 635d M57N2 Rear Differential Diff 7561347 3.15 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 E63 E64 LCI 635d M57N2 Rear Differential Diff is a rear drive unit designed for the Rear axle, specifically engineered for post-facelift BMW 6 Series models. The precisely selected gear ratio ensures stable torque transfer, which translates into predictable vehicle behavior and comfortable drivetrain operation.

Specifications and technical data

• SKU: 7561348
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7561348
• Substitutable numbers: 33107561348, 7561348, 33107561347, 7561347
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented differential belongs to the Differentials category and is responsible for distributing drive to the rear axle wheels in the post-facelift BMW 635d (E63 LCI). The rear axle construction with a 3.15 ratio has been developed for the high torque of the diesel engine, ensuring the drivetrain operates in a predictable manner during both relaxed and dynamic driving.

Proper gear staging in the differential affects:

• acceleration characteristics across the entire RPM range,
• load on the transmission and half-shafts,
• traction stability at higher speeds.

Benefits of using an original BMW differential

Using an original differential dedicated to the BMW E63 LCI 635d allows for maintaining factory drivetrain performance parameters. This means predictable throttle response, consistency with factory ECU calibration, and no need for modifications to mounts or rear axle geometry.

The main advantages of this solution include:

• Factory fitment to the rear axle and suspension design,
• preservation of stock handling characteristics and ride comfort,
• reduced risk of improper fitment of drivetrain components.

Technical specifications and installation

The differential is designed as a rear-axle mounted component, which is crucial when selecting parts for a specific vehicle configuration. The Rear placement determines the mounting method, the type of compatible half-shafts, and the geometry of the entire drivetrain.

When replacing the differential in a BMW 635d E63 LCI, it is worth paying attention to:

• structural compatibility with the existing drive axle,
• selection of the correct gear ratio relative to the transmission used,
• condition of mating components – half-shafts, supports, and mounts.

Practical application and gear ratio selection

The 3.15 ratio in the BMW 635d E63 LCI provides a balance between acceleration flexibility and ride comfort at highway speeds. In practice, this means the car maintains good dynamics while keeping engine RPMs reasonable during constant-speed driving.

If you want to better understand how the differential ratio affects the car's character and how to choose a drive axle for your driving style, check out the article Dismantled drive axles and differentials – how to choose ratios for your driving style, where you will find practical examples and explanations.

Expanding the BMW drivetrain

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 additional differentials, drive axles, or rear gearboxes, check out the available parts in the BMW Differentials category.

Summary

BMW E63 E64 LCI 635d M57N2 Rear Differential Diff is a solution intended for users who want to maintain consistency with the factory drivetrain specifications while ensuring proper power transfer to the rear axle. The appropriately selected 3.15 ratio and dedicated rear axle placement make this a part highly valued for professional repairs and conscious upgrades of post-facelift BMW 6 Series vehicles.