BMW F20 F21 F30 F31 F32 Diesel B47 Manual Gearbox START STOP WARRANTY

Listing details

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

BMW F20 F21 F30 F31 F32 Diesel B47 Manual Gearbox START STOP WARRANTY is an original, used manual gearbox designed for B47 diesel engines. It provides precise manual gear shifting and is compatible with the START STOP system, allowing for efficient use of the diesel engine's potential and reduced fuel consumption.

Specifications and technical data

• SKU: 8609434
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8609434
• Substitutable numbers: 23008609434, 8609434, 23007648887, 7648887, 23008609433 23007648886, 8609433 7648886, mt10, 038
• Fuel type: Diesel
• Gearbox type: Manual
• Category: Manual Transmission

Purpose and compatibility

The presented gearbox belongs to the Manual gearboxes category and is dedicated to BMW F-series models with the B47 diesel engine, including hatchback, sedan, estate, and coupe body styles. The design was developed to maintain the factory characteristics of the drivetrain, ensuring seamless operation with the engine, control system, and the START STOP system.

As a genuine BMW component, the gearbox is optimized for the proper transfer of torque from the diesel engine, ensuring stable performance across the full range of loads – from city driving to long motorway trips.

Construction and operating characteristics

The gearbox is designed as a manual transmission, which means the driver has direct control over gear changes. This type of solution is particularly valued in BMW cars for the tactile clutch engagement point, predictable gear lever operation, and the ability to precisely match the gear to current driving conditions.

Integration with the START STOP system allows for the automatic engine shutdown and restart during stops, while maintaining full transmission functionality. Proper calibration of the mechanism and control system enables smooth acceleration after the engine restarts, without any unwanted jerking.

Application in B47 diesel engines

This gearbox is designed to work with B47 family diesel engines, meaning the gear ratios are adapted to the torque characteristics of modern BMW diesel units. Properly selected gear ratios support:

• efficient acceleration in the low and medium RPM range,
• maintaining an economical engine speed during motorway driving,
• stable drivetrain operation under load, e.g., with a full set of passengers.

As a result, the gearbox fits well with the character of BMW diesel cars – combining dynamic throttle response with reasonable fuel consumption.

Condition, origin, and identification parameters

The item comes from the BMW range and is classified as used, which allows for significant repair cost savings compared to purchasing a brand-new transmission. The product has assigned OEM part numbers and interchangeable numbers, which allow for clear identification and matching to a specific vehicle configuration – detailed data can be found in the technical specifications section.

Information such as the SKU, fuel type, and gearbox type is also available in the product description, which facilitates verifying compatibility with your BMW model before deciding on installation.

Benefits of choosing a used manual gearbox

By choosing this gearbox, you gain a factory-matched component that allows you to restore proper drivetrain operation without the need for costly regeneration or purchasing a new unit. The manual design is valued for its simpler construction compared to automatic transmissions, which in practice can mean easier maintenance and lower potential repair costs in the future.

If you are considering whether choosing a used transmission is the right solution, it is worth reading the guide describing the cost-effectiveness of such an investment and key aspects to check before installation – details can be found in the article Used gearbox – when is it worth it and what you need to remember.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your BMW and need other components from the same group, such as housings, selectors, or mounting elements, check the available parts in the BMW manual gearboxes category.