Audi A5 8T 2.0 TFSI Quattro Rear Differential 37:9 MNA 0BC500044 WARRANTY

Listing details

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

Audi A5 8T 2.0 TFSI Quattro Rear Differential 37:9 MNA is a factory drivetrain component designed for installation on the rear axle of the Quattro drive system. This used rear differential ensures proper torque distribution and stable drivetrain operation, providing a practical solution for repairs or rebuilding the chassis system in an Audi A5 8T 2.0 TFSI.

Specifications and technical data

• SKU: 0BC500044
• Mark: Audi
• Condition: Used
• OEM Part Number: 0BC500044
• Substitutable numbers: 0BC500044, 0BC 500 044
• Location on the vehicle: Rear
• Category: Differentials

Application and function in the drivetrain

The rear differential in the Audi A5 8T 2.0 TFSI Quattro is responsible for transferring power to the rear axle and compensating for wheel speed differences when cornering. A correctly selected differential is crucial for maintaining predictable traction, stability at higher speeds, and proper interaction with the vehicle's electronic systems.

The 37:9 MNA gear ratio configuration allows for maintaining the factory characteristics of the Quattro drive, which is important for both acceleration dynamics and driving comfort in daily use.

Construction and performance parameters

The rear differential belongs to the Differentials category and is structurally matched to the chassis architecture of the Audi A5 8T. Its location on the vehicle is defined as rear, which means it is mounted in the rear axle area, with appropriate positioning relative to the driveshaft and half-shafts.

Selecting the right differential with the correct gear ratio has a direct impact on:

• the consistency of the Quattro drive system with the 2.0 TFSI unit,
• the proper operation of electronic stability control systems,
• even load distribution on drivetrain components,
• reduction of unwanted vibrations and noise in the rear of the vehicle.

Benefits of using an original differential

Using an original rear differential in the Audi A5 8T 2.0 TFSI Quattro allows you to maintain factory handling parameters and drivetrain characteristics. A used OEM component is particularly beneficial for post-accident repairs, replacing a worn-out differential, or restoring the car to its original manufacturer configuration.

The main advantages of this solution include:

• design matched to the specific engine and drive version,
• possibility of installation in place of the factory component without interfering with suspension geometry,
• maintaining compatibility with other drivetrain and control system elements.

Gear ratio selection and compatibility

When replacing a differential in an Audi A5 8T 2.0 TFSI Quattro, it is crucial to match the rear differential ratio to the other drivetrain components. Incorrect selection may result in improper system operation, electronic system errors, or accelerated component wear. This is why it is worth using components with parameters consistent with the factory specification.

To better understand the relationships between the differential ratio, engine characteristics, and driving style, the guide article Dismantled drive axles and differentials – how to choose gear ratios for your driving style will be helpful, as it discusses practical configuration examples and the most common driver questions.

Mounting area and practical service tips

The rear differential is mounted in the rear part of the body, in the immediate vicinity of the suspension and exhaust system. When planning a replacement, it is worth considering:

• checking the condition of mounts and bushings in the rear axle area,
• verifying the tightness of connections and the lubricant level,
• checking the interaction with half-shafts and the driveshaft after installation.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Audi and need other elements from the same group, such as differential housings, complete axles, or other drivetrain components, check the available parts in the Audi Differentials category.

Safe purchase of a used rear differential

Purchasing a used differential requires attention to compatibility with the specific vehicle version, gear ratio parameters, and operational condition. Proper identification by make, category, and location on the vehicle facilitates the selection of the right component for a given Audi A5 8T 2.0 TFSI Quattro.

Additional tips on the safe selection of used drivetrain elements and other components can be found in the guide Safe purchase of used car parts online – a step-by-step guide, which discusses practical evaluation criteria and how to verify parts before installation.