BMW X3 E83 LCI Manual Gearbox 6 Speed Diesel Part 3439814

BMW X3 E83 LCI Manual Gearbox 6 Speed Diesel is an original drivetrain component designed for diesel versions, ensuring precise torque transmission. Thanks to its 6-speed manual design, the gearbox allows for conscious gear management and stable drivetrain operation across a wide range of loads. This is a solution for users who expect consistent drivetrain performance and compatibility with the factory BMW architecture.

Specifications and technical data

• SKU: 3439814-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 3439814
• Substitutable numbers: 23003439814, 3439814, 23003414957, 3414957, 23003428269, 3428269, H006A, H006, H015, H015A
• Fuel type: Diesel
• Gearbox type: Manual
• Category: Gearboxes, Racks & Pinions

Technical characteristics and intended use

The presented gearbox has been designed to work with a diesel engine, which means it is adapted to the torque characteristics of Diesel units. The 6-speed manual design allows for optimal gear selection for both city and highway driving, with an emphasis on stability, predictability, and comfort of the drivetrain operation. The element belongs to the Steering gears and housings group, which in practice means it is part of a key assembly responsible for transmitting driving force and working with other components of the chassis. The design is intended for installation in the BMW X3 E83 generation after the facelift (LCI), maintaining factory mounting points and geometry.

Benefits of using an original manual gearbox

Using an original manual gearbox in the BMW X3 E83 LCI brings a number of practical operational benefits:

• preservation of the factory driving characteristics and drivetrain operation,
• consistency with the diesel engine control system,
• possibility of effectively using 6 gears across the full speed range,
• better vehicle control during dynamic driving and towing. By maintaining the original drivetrain architecture, the gearbox supports stable operation of the entire powertrain, which is important for both durability and the predictability of the vehicle's behavior in daily use.

Integration with the BMW drivetrain

The 6-speed manual gearbox for the BMW X3 E83 LCI has been developed for full integration with the vehicle's factory equipment. This includes cooperation with the clutch system, half-shafts, mounting elements, and control systems responsible for the operation of the diesel unit. As a result, installation is based on factory design solutions, without the need to interfere with the drivetrain geometry. Such a fit promotes maintaining proper operating culture, reducing vibrations, and even load distribution. For the user, this means predictable vehicle behavior, and for the service center – the ability to use standard assembly and diagnostic procedures.

Professional selection and practical application

When choosing a gearbox for the BMW X3 E83 LCI with a diesel engine, it is worth paying attention to compatibility with the fuel type and transmission type. The presented element is intended for vehicles with a Diesel engine and manual transmission, which allows for maintaining the original vehicle configuration. Such a choice promotes trouble-free operation and facilitates subsequent service maintenance. If you are planning a comprehensive repair or upgrade of the steering and drivetrain area in your BMW and need other elements from the same group, such as gear housings, mounting elements, or additional components working with the steering system, check the available parts in the BMW steering gears and housings category.

Why it is worth choosing original used BMW components

In the premium car segment, such as BMW, the use of original components – even in a used version – often represents a reasonable compromise between cost and quality. The original manual gearbox maintains factory operating parameters while allowing for reduced expenses related to vehicle repair or modernization. If you want to better understand why used drivetrain elements and other OEM components for premium brands are becoming an increasingly popular choice, it is worth reading the article: Crisis in the new parts market? Why in 2026 used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend. This will allow you to consciously approach the selection of parts and optimize vehicle maintenance costs.