BMW F80 M3 F82 F83 M4 F87 M2 Rear Differential Diff 3,46 Ratio 2289970 WARRANTY

Listing details

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

BMW F80 M3 F82 F83 M4 F87 M2 Rear Differential Diff 3,46 Ratio is an original BMW drivetrain component, designed for rear axle installation in sports M-series models. The rear differential with a precisely selected gear ratio ensures stable torque transfer, supporting dynamic acceleration and predictable vehicle handling in corners.

Specifications and technical data

• SKU: 8090464
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8090464
• Substitutable numbers: 33108090464, 8090464, 33102289970, 2289970
• Location on the vehicle: Rear
• Category: Additional Differential Parts

Purpose and function in the drivetrain

The presented differential is the component responsible for distributing power to the rear wheels, which is crucial for traction, stability, and the handling characteristics of rear-wheel-drive BMW vehicles. Its placement on the vehicle in the rear axle area allows for direct cooperation with the half-shafts and the rest of the drivetrain, maintaining factory suspension geometry and the correct power transmission line.

Thanks to the properly selected gear ratio, the differential supports quick throttle response, predictable behavior when exiting corners, and stability at higher speeds, which is particularly important for the powerful engines used in M3, M4, and M2 models.

Technical characteristics and compatibility

The differential belongs to the Other differential parts group, meaning it is a specialized component strictly linked to a specific BMW drivetrain configuration. The differential's construction has been designed to handle the high loads typical of sports-oriented cars, ensuring adequate housing rigidity and stable gear operation.

Its original BMW OE origin helps maintain factory drivetrain performance parameters, including:

• proper fitment with rear suspension mounts,
• correct cooperation with the driveshaft and half-shafts,
• compatibility with factory drivetrain control settings.

As a result, this component can be used both as a replacement for a damaged differential and as part of a conscious drivetrain upgrade within the same model platform.

Condition, verification, and advantages of using a used part

The differential is offered as a used part, which allows for significant cost savings on repairs or upgrades while maintaining original BMW specifications. In practice, this means the ability to restore proper drivetrain operation without the need to resort to cheaper replacements with uncertain parameters.

Choosing an original, used differential brings a number of benefits:

• preservation of factory handling and traction characteristics,
• better compatibility with other drivetrain components,
• reduced risk of installation issues resulting from dimensional differences in aftermarket replacements.

This solution is particularly attractive for users who expect consistency with the vehicle's factory configuration and predictable car behavior in both road and track conditions.

Application in service and tuning practice

The rear axle differential in BMW M-series cars is a component often subjected to increased loads, both in daily use and during sports driving. Replacing a worn differential with an original equivalent allows you to:

• reduce noise and vibrations coming from the rear of the drivetrain,
• restore smooth torque transfer,
• increase driving confidence during dynamic maneuvers.

For workshops specializing in the BMW brand and users assembling components themselves, such an element is a valuable component that restores full functionality to the rear-wheel drive.

Drivetrain expansion and selection of other components

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, mounts, or additional mounting hardware, check out the available parts in the Other BMW differential parts category.

When planning a larger scope of work – from the drivetrain to suspension components or engine accessories – it is worth using a One-Stop-Shop approach, which allows you to select a consistent set of original used parts in one place. You can find more about effective purchase planning and avoiding problematic replacements in the article: Comprehensive supply: from the engine to the smallest clip – how to complete used car parts in one place?.