BMW E87 120d E90 E91 318d M47N2 Rear Differential Diff 2,47 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 E87 120d E90 E91 318d M47N2 Rear Differential Diff 2,47 Ratio WARRANTY with a 2.47 ratio is a used, original drivetrain component designed for rear axle installation. It is the ideal solution for drivers seeking a consistent final drive ratio matched to the M47N2 engine characteristics and stable drivetrain performance in daily operation.

Specifications and technical data

• SKU: 7566198
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7566198
• Substitutable numbers: 33107566197, 7566197, 33107556674, 33107524305, 7556674, 7524305, 33107566198, 7566198, 33107524306, 7524306, 33107556675, 7556675
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function in the drivetrain

The presented rear differential is a component from the Differentials category, designed to work with the M47N2 unit in BMW 1 Series E87 120d and 3 Series E90/E91 318d models. It is responsible for distributing torque to the rear wheels, ensuring predictable vehicle behavior during acceleration, engine braking, and cornering.

The 2.47 ratio promotes smoother, more economical driving at lower engine RPMs in higher gears, which is beneficial for highway and long-distance travel. At the same time, it maintains the proper dynamics characteristic of BMW's rear-wheel-drive system.

Key technical features and fitment

The differential is designed for installation on the vehicle's rear axle, in accordance with BMW's factory drivetrain design. The axle housing construction has been developed to work with stock half-shafts, the driveshaft, and factory mounting points in the E87 and E90/E91 chassis.

The component has a dedicated OEM part number and a set of interchangeable numbers, which facilitates verification of compatibility with specific equipment versions and model years. This allows for precise matching of the differential to the existing drivetrain configuration, minimizing the risk of incorrect ratios or installation issues.

Condition, origin, and practical application

The offered differential is a used original BMW component, which ensures factory geometry, proper fitment with the suspension, and predictable performance during operation. It is a great solution for users who want to restore proper drivetrain function after a failure, mechanical wear, or unsuccessful gear ratio modifications.

The rear axle with a 2.47 ratio will perform well both in daily use and in situations where you want to maintain stock driving parameters after replacing drivetrain components. Choosing a complete differential instead of repairing a worn unit often reduces vehicle downtime and simplifies the service process.

Ratio selection and technical support

When replacing a differential, it is crucial to match the ratio to the gearbox, engine power, and desired driving style. This affects engine RPM at a given speed, fuel consumption, and perceived dynamics. If you want to better understand how to choose a final drive and differential for your needs, it is worth consulting reliable technical resources – the article Dismantled final drives and differentials – how to choose ratios for your driving style will be helpful, as it provides an overview of ratios, configuration examples, and a practical FAQ.

Why choose a used BMW differential

An original, used BMW differential is a reasonable compromise between cost and quality. You retain factory design solutions, avoiding problems typical of cheap replacements, while simultaneously limiting expenses compared to a new axle. If you want to learn more about the conscious selection of dismantled parts, the guide Used parts – your guide to the best offers in an automotive store may be helpful, as it discusses the practical aspects of purchasing and operating such components.

If you are planning a comprehensive repair or upgrade of the drivetrain in your BMW and need other components from the same group, such as additional axles, other ratio variants, or compatible differentials, check out the available parts in the BMW Differentials category.