BMW E87 E90 318d 120d Differential Diff 3,07 ratio 7566169 7524307 WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

BMW E87 E90 318d 120d Differential Diff 3,07 ratio is an original drivetrain component from the Differentials category, designed for installation on the rear axle of selected BMW 1 and 3 Series models. The stable final drive ratio ensures predictable vehicle handling, correct traction, and proper integration with the vehicle's factory electronics, which is crucial for drivetrain repairs.

Specifications and technical data

• SKU: 7566169
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7566169
• Substitutable numbers: 33107566170, 7566170, 33107524308, 7524308, 33107566169, 7566169, 33107524307, 7524307
• Location on the vehicle: Rear
• Category: Differentials

Purpose and function of the differential

The presented rear differential is dedicated to BMW rear-wheel-drive systems, where it is responsible for torque distribution between the wheels and maintaining the correct gear ratio for the entire drivetrain. Using the appropriate differential has a direct impact on:

• acceleration smoothness and engine flexibility,
• vehicle stability during cornering,
• proper cooperation with the factory gearbox and traction control systems.

Selecting a differential with the correct ratio is particularly important when replacing a damaged unit, performing drivetrain swaps, or making modifications for fuel economy or driving dynamics.

Original BMW origin

The differential comes from the BMW range, which ensures factory standards of workmanship, geometry, and operating parameters are maintained. The original design provides:

• precise fitment to factory mounting points on the rear axle,
• compatibility with stock half-shafts and the driveshaft,
• proper interaction with factory safety and driving comfort systems.

As a result, this component can be used as a direct replacement for a damaged differential without the need for structural modifications.

Vehicle placement and installation aspects

The differential is designed for installation on the rear axle of the vehicle, in the central part of the drivetrain. When planning a replacement, it is worth paying attention to:

• the condition of the differential mounts and suspension bushings,
• the tightness of connections with the half-shafts and driveshaft,
• proper venting and refilling of gear oil after installation.

Professional installation, adhering to BMW torque specifications and service procedures, minimizes the risk of noise, vibration, and premature wear of the component.

Use of a pre-owned differential

The item is offered in used condition, which represents a reasonable compromise between repair costs and maintaining the vehicle's original specifications. In practice, this allows for:

• restoring drivetrain functionality after a differential failure,
• preserving the factory handling characteristics of the BMW,
• reducing costs compared to purchasing a new component.

Before installation, a standard service check is recommended, including an assessment of backlash, seals, and a potential oil change to maximize the trouble-free service life.

Gear ratio selection and additional materials

Choosing the correct differential ratio for a specific engine and gearbox version is crucial for driving comfort, fuel consumption, and dynamics. If you want to better understand how to choose a final drive and differential for your driving style, it is worth checking out this practical guide: Dismantled final drives and differentials – how to choose ratios for your driving style, where you will find a discussion on ratios, compatibility, and application examples.

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 differential housings, covers, or additional final drive components, check out the available parts in the BMW Differentials category.