BMW F80 M3 F82 F83 M4 F87 M2 Rear Differential Diff 3,46 Ratio 8090479 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 rear differential, designed for installation in the rear axle of M-series sports models. This is a solution for users seeking factory handling characteristics, precise power transmission, and consistency with the stock drivetrain configuration.

Specifications and technical data

• SKU: 8090479
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8090479
• Substitutable numbers: 8090479, 33108090479, 33108090464, 8090464, 33102289970, 2289970
• Location on the vehicle: Rear
• Category: Additional Differential Parts

Purpose and function in the drivetrain

The presented rear differential is the component responsible for torque distribution to the rear wheels and proper gear ratio in BMW M-family vehicles. The 3,46 ratio promotes dynamic acceleration while maintaining usability in daily driving, which is particularly important for the high-performance engines used in the F80 M3, F82 M4, and F87 M2.

Its placement in the rear of the vehicle ensures direct cooperation with the half-shafts and suspension, influencing stability, traction, and predictable vehicle behavior during acceleration and engine braking.

Benefits of using an original BMW differential

Using an original BMW differential in the rear axle allows for maintaining factory drivetrain performance parameters, which is important for both performance and the durability of cooperating components. Key advantages include:

• Consistency with factory handling characteristics – maintaining the manufacturer-intended throttle response and stability at high speeds.
• Proper fitment with stock mounts and suspension geometry, which facilitates installation and limits the need for modifications.
• Compatibility with factory traction and stability control systems, which is essential in high-power vehicles.

This item from the Other differential parts category is suitable both for replacing a damaged differential and for restoring a stock configuration after previous modifications.

Condition, origin, and service application

The differential comes from the BMW range and is marked as a used component, which allows for economical repair without compromising the original design. This type of component is particularly useful in situations where:

• mechanical damage or excessive wear of the existing differential has occurred,
• it is necessary to replace the complete assembly instead of performing costly regeneration of individual parts,
• the priority is to maintain the stock gear ratio and drivetrain operating characteristics.

Thanks to its factory origin, the differential fits well with the requirements of users expecting predictable vehicle behavior on the track and in daily use.

Vehicle integration and installation aspects

The rear differential has been designed for installation in the rear of the chassis, in the location provided by the manufacturer. The proper housing design and placement of mounting points facilitate service work and shorten replacement time. In practice, this means:

• the possibility of use within standard workshop procedures,
• no need for adapting non-standard brackets or structural modifications,
• easier diagnostics of potential vibrations or noises after installation, thanks to maintaining the factory layout.

For workshops specializing in BMW M-series, this is a solution that allows for efficient drivetrain repairs while maintaining high repeatability of the result.

Service expansion and cost optimization

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 the available parts in the Other BMW differential parts category.

Owners of other brands, such as Volkswagen, can also significantly reduce service costs by using the market for used and replacement parts – you will find practical tips in the article Repairing a Volkswagen on a budget? Discover how to save on original car parts, which shows how to consciously choose components and plan repairs with a budget in mind.

If you are also interested in the ecological aspect and want to better utilize the potential of recycled parts while maintaining vehicle performance, it is worth reading the material Eco-tuning in practice: how to increase performance while reducing your carbon footprint with recycled parts, which discusses a practical approach to vehicle modernization using used components.