Mini One D F55 F56 Diesel B37 B37A Manual Gearbox 8687639 GS6-58DG BAG WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

Mini One D F55 F56 Diesel B37 B37A Manual Gearbox is an original, used manual gearbox designed for diesel units in the Mini One D F56 generation with the B37 engine. The manual design ensures direct, precise control of the drivetrain, and the use of an OEM component guarantees a proper fit with the factory drivetrain architecture.

Specifications and technical data

• SKU: 8687639
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 8687639
• Substitutable numbers: 8687639, 23008687639, 8671586, 23008671586, 7638374, 23007638374, 8687711, 23008687711
• Fuel type: Diesel
• Gearbox type: Manual
• Category: Manual Transmission

Application and compatibility

The presented gearbox belongs to the Manual gearboxes category and has been designed to work with the diesel engine in the Mini One D F56 B37. This means compatibility with factory mounting points, proper gear ratios selected for the torque characteristics of the diesel unit, and correct operation with standard drivetrain equipment.

The manual transmission design is dedicated to drivers who prefer direct control over gear shifting, which translates into predictable vehicle behavior, especially in urban conditions and during extra-urban driving.

Construction and operating characteristics

The Mini One D F55 F56 Diesel B37 B37A Manual Gearbox as an OEM component is designed for optimal torque transmission of the diesel engine while maintaining appropriate durability. The manual transmission type enables:

• precise gear selection thanks to mechanical gear synchronization,
• direct connection to the clutch system,
• effective use of diesel characteristics across the full rev range.

A drivetrain configured in this way promotes stable operation under load and also facilitates maintaining an economical driving style through conscious gear selection by the driver.

Condition, origin, and benefits of choosing OEM

The offered gearbox is a used component, which allows for a significant reduction in repair costs compared to purchasing a new transmission while maintaining the manufacturer's factory specifications. The part comes from a dismantled Mini vehicle, ensuring structural consistency with the original drivetrain.

Choosing an original, used manual gearbox for a diesel engine minimizes the risk of fitment issues, reduces the need for installation modifications, and facilitates service work. For the user, this means shorter vehicle downtime and predictable car behavior after the repair.

If you want to better understand the differences between transmissions and key aspects of purchasing secondary market components, it is worth reading the guide: Gearbox: manual, automatic or DSG – common faults and a guide to buying a used gearbox.

Additionally, when deciding between an original part from dismantling and a replacement, the following material may be helpful: 5 reasons why a used OEM part is a better choice than a replacement.

Practical installation and operating tips

Before installation, a standard service procedure is recommended, including checking for leaks, verifying mounting points, and using the appropriate transmission oil in accordance with the vehicle manufacturer's recommendations. A properly installed manual gearbox working with a diesel engine ensures stable starting, smooth gear shifting, and predictable behavior under higher loads.

Proper operation, including regular inspection of the transmission oil level and avoiding sudden, unnecessary overloads, extends the service life of the entire drivetrain and reduces the risk of costly repairs in the future.

Mini drivetrain expansion

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mini and need other components from the same group, such as additional transmissions, housings, or selector control elements, check the available parts in the Mini Manual gearboxes category.