BMW F20 F21 LCI 114d 116d B37 Manual Gearbox GS6-17DG 8645319 8650907 WARRANTY

BMW F20 F21 LCI 114d 116d B37 Manual Gearbox GS6-17DG is a manual transmission from the Manual gearboxes group, designed for BMW 1 Series models with the B37 engine. This used OEM component is a solution for drivers looking for a technically matched gearbox, allowing for efficient repair of the drivetrain without the need for costly regeneration of the old unit.

Specifications and technical data

• SKU: 8645319
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8645319
• Substitutable numbers: 23008645319, 8645319, 23008650907, 8650907
• Gearbox type: Manual
• Category: Manual Transmission

Purpose and compatibility with BMW F20/F21

The described gearbox has been designed to work with the B37 powertrain in BMW F20 and F21 models in 114d and 116d versions. This ensures the retention of factory mounting geometry, appropriate gear ratios matched to the engine's characteristics, and compatibility with standard drivetrain equipment. As a result, installation is straightforward, and the risk of fitment issues is minimized.

Characteristics of the GS6-17DG manual gearbox

The manual transmission type provides direct control over gear changes, which is valued by drivers who prefer precise, mechanical drivetrain control. The design of the GS6-17DG gearbox has been developed for efficient torque transfer of the B37 engine while maintaining the appropriate durability of internal components. The use of manual control also allows for easier diagnostics of potential faults compared to automatic solutions.

Benefits of choosing a used BMW gearbox

Choosing a used gearbox from the BMW OEM family is a compromise between costs and maintaining the factory performance parameters of the drivetrain. This type of transmission:

• enables the restoration of proper drivetrain operation without the need for structural vehicle modifications,
• ensures compatibility with factory mounting points and standard equipment,
• allows for reduced vehicle downtime in the workshop thanks to a ready-to-install component.

For many users, it is also important that the original BMW manual gearbox retains the gear-shifting characteristics known from the factory assembly, which translates into predictable vehicle behavior.

Selection by part numbers and technical support

To correctly select this gearbox for a specific BMW F20 or F21 unit, it is crucial to compare identification data, such as the OEM part number and available interchangeable numbers. Verification by numbers helps avoid compatibility issues, especially in the case of differences resulting from the production year or equipment version. In case of doubt, it is worth consulting a mechanic or using VIN decoding to confirm the transmission's compatibility with the given vehicle.

If you want to better understand how to safely choose used drivetrain components and what to pay attention to when purchasing, the expert guide Why it is worth buying used gearboxes and engines – facts instead of myths, which discusses, among other things, selection by VIN and OEM as well as repair cost ratios, will be helpful.

BMW manual gearboxes – expansion and drivetrain modernization

If you are planning a comprehensive repair or modernization of the drivetrain area in your BMW and need other elements from the same group, such as a clutch, slave cylinder, or selector components, check the available parts in the BMW manual gearboxes category.

Summary

BMW F20 F21 LCI 114d 116d B37 Manual Gearbox GS6-17DG is a proposal for users who expect compliance with factory specifications and predictable drivetrain behavior after replacing the transmission. The manual design, compatibility with the B37 engine, and membership in the Manual gearboxes group make it a solution that is technically consistent with the manufacturer's assumptions and suitable both for standard repairs and planned drivetrain modernization in the BMW 1 Series.