BMW F20 F21 F30 F31 Petrol B38 6 Speed Manual Gearbox GS6-17FG 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 Petrol B38 6 Speed Manual Gearbox GS6-17FG WARRANTY is an original, used manual transmission from the Manual gearboxes category, designed for BMW vehicles with petrol engines. It is a solution for users expecting precise mechanism operation, maintenance of factory driving characteristics, and high compatibility with the drivetrain.

Specifications and technical data

• SKU: 8637974
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8637974
• Substitutable numbers: 8637974, 23008637974, 23008650905, 8650905
• Fuel type: Petrol
• Gearbox type: Manual
• Category: Manual Transmission

Purpose and technical specifications

The presented gearbox belongs to the family of BMW manual transmissions designed to work with petrol-powered units. The manual design ensures direct control over gear ratios, which is particularly valued by drivers who prefer a dynamic yet predictable way of power delivery.

The GS6-17FG model was developed to maintain the proper torque characteristics and smooth gear shifting in typical urban and extra-urban operating conditions. The gear synchronization mechanism, selector assembly, and transmission housing are adapted to the drivetrain architecture used in the BMW F-series, which facilitates integration with the vehicle's factory equipment.

Benefits of using the BMW F20 F30 manual gearbox

Using this transmission to replace a worn or damaged component allows for the restoration of proper drivetrain operation without the need for interference with the control electronics characteristic of automatic gearboxes. The manual design reduces the number of potential failure points while enabling:

• preservation of the factory driving character typical of BMW,
• precise torque delivery to the wheels,
• better control over engine operation across the full rev range,
• easier diagnostics of potential drivetrain faults.

For many users, the ability to optimize driving style for fuel efficiency is also important – a manual gearbox allows for conscious gear selection, which promotes economical operation while maintaining appropriate dynamics.

Application in BMW vehicles with petrol engines

This gearbox has been constructed to work with petrol drivetrains, which means the gear ratios are matched to the torque and power characteristics of such units. In practice, this translates into:

• consistent acceleration across the entire rev range,
• gear ratios properly selected for city and highway driving,
• stable operation at higher rotational speeds typical of petrol engines.

By maintaining the original BMW design concept, the installation of this transmission allows for the retention of factory driving sensations, which is particularly important for repairs of daily-driven vehicles and fleet applications.

Condition, origin, and installation aspects

The offered gearbox comes from the used BMW OEM components segment, which means it retains the original geometry, mounting points, and compatibility with factory equipment elements. This type of solution is often chosen as a compromise between costs and maintaining compliance with the vehicle manufacturer's guidelines.

Before installation, a standard workshop procedure is recommended: checking for leaks, verifying the external condition, changing the transmission oil according to the manufacturer's recommendations, and checking associated components (clutch, slave cylinder, mounting bushings). Such an approach minimizes the risk of additional service downtime and allows for the full potential of the transmission to be utilized.

Technical support and additional materials

When choosing a used transmission, it is worth approaching the issue of cost-effectiveness and selecting the right model for a specific car configuration consciously. A detailed discussion of this topic, along with a comparison of manual and automatic gearboxes and an analysis of the cost-effectiveness of regeneration, 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 elements from the same group, such as gearboxes with different ratios, housings, or complete assemblies with a selector, check the available parts in the BMW manual gearboxes category.