Audi A4 B8 A5 8T 3.0 TDI Quattro Stronic Gearbox 7 Speed MNJ 0B5300057B WARRANTY

Audi A4 B8 A5 8T 3.0 TDI Quattro Stronic Gearbox 7 Speed MNJ is a factory-original automatic transmission designed for powerful Audi diesel units with quattro all-wheel drive. A used gearbox from this series is the ideal solution for drivers who expect seamless integration with the diesel engine, dynamic gear shifting, and the preservation of the vehicle's original handling characteristics. Thanks to the S‑Tronic MNJ design, the transmission ensures precise torque transfer and comfortable operation in daily use.

Specifications and technical data

• SKU: 0B5300057B
• Mark: Audi
• Condition: Used
• OEM Part Number: 0B5300057B
• Substitutable numbers: 0B5300057B, 0B5 300 057 B
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility

The presented automatic transmission has been designed to work with the 3.0 TDI diesel engine and quattro all-wheel drive in Audi A4 B8 and Audi A5 8T models. This ensures that factory mounting points, correct axle shaft lengths, and proper communication with the engine and drivetrain control systems are maintained. Using an original transmission from the S‑Tronic family allows you to keep the acceleration and drivetrain performance consistent with the manufacturer's specifications.

Characteristics of the S‑Tronic MNJ gearbox

The S‑Tronic family gearbox is a dual-clutch automatic transmission that combines the smoothness of a classic automatic with the shift speed typical of sports solutions. In practice, this means:

• efficient acceleration without noticeable gaps in power delivery,
• noticeably dynamic response to throttle input,
• stable cooperation with the diesel engine across the entire rev range,
• comfortable driving in automatic mode and the possibility of more assertive performance in sports modes.

Thanks to the factory configuration for the 3.0 TDI Quattro unit, the gearbox maintains appropriate gear ratios for high torque, which translates into effective use of engine power both on the highway and in city driving.

Benefits of using an original automatic transmission

Choosing an original transmission from the Automatic Transmissions category for an Audi offers a number of practical advantages:

• preservation of factory shift logic and integration with vehicle electronics,
• proper fitment for the quattro drivetrain,
• compatibility with diagnostics and adaptation using standard Audi service tools,
• consistency with factory settings for driver assistance systems.

The used S‑Tronic MNJ gearbox is a particularly attractive solution for post-accident repairs or when replacing a worn-out transmission, where the priority is to maintain the original vehicle specification at a reasonable cost.

Condition, installation, and service aspects

This item comes from the secondary market, which allows for economical drivetrain repair while maintaining the original Audi design. Before installation, a standard service procedure is recommended: checking for leaks, replacing the transmission fluid according to the manufacturer's recommendations, and performing a gearbox adaptation using appropriate diagnostic software. This approach increases the chances of stable and predictable transmission operation in the long term.

Audi automatic transmissions – expansion and part selection

If you are planning a comprehensive repair or upgrade of your Audi's drivetrain and need other components from the same group, such as transmission housings, control elements, or additional hydraulic sub-assemblies, check out the available parts in the Audi automatic transmissions category.

When selecting a used automatic transmission, it is worth paying attention to the fuel type, drivetrain type, and the compatibility of the gearbox codes with your vehicle's configuration. A detailed discussion of the differences between manual, automatic, and dual-clutch transmissions, as well as practical tips on buying a used gearbox, can be found in the article: Gearbox: manual, automatic, or DSG – common faults and a guide to buying a used gearbox.

Summary

Audi A4 B8 A5 8T 3.0 TDI Quattro Stronic Gearbox 7 Speed MNJ is an original automatic transmission designed to work with the diesel engine and quattro drive, ensuring consistency with the vehicle's factory configuration. Choosing this solution allows for a technically correct drivetrain repair, maintaining the driving characteristics intended by the manufacturer, and achieving a reasonable balance between service costs and the quality of the components used.