Audi A6 C6 4F 3.0 TDI Quattro Automatic Gearbox 6 Speed KJC 09L300040TX WARRANTY

Listing details

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

Audi A6 C6 4F 3.0 TDI Quattro Automatic Gearbox 6 Speed KJC is a factory-original automatic transmission designed for diesel engines with the quattro system. It serves as a solid foundation for professional drivetrain repair, ensuring proper compatibility with the diesel unit and all-wheel drive. This is the ideal solution for users looking for a proven, original automatic transmission for their Audi A6 C6 4F 3.0 TDI.

Specifications and technical data

• SKU: 09L300040TX
• Mark: Audi
• Condition: Used
• OEM Part Number: 09L300040TX
• Substitutable numbers: 09L300040TX, 09L 300 040 TX
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and compatibility

The described automatic transmission was designed for the Audi A6 C6 generation (4F designation) with a 3.0 TDI engine and quattro all-wheel drive. The transmission's design is tailored to the torque characteristics of the diesel unit, which translates into stable acceleration and predictable vehicle behavior across the full load range. Using an original transmission from the same family ensures proper fitment with the factory electronics and the drivetrain system.

Technical characteristics of the automatic transmission

The automatic transmission in the Audi A6 C6 4F 3.0 TDI Quattro has been engineered to combine driving comfort with the efficient use of the diesel engine's torque. The type of automatic transmission used allows for smooth gear changes, reduces jerking, and supports the stable, predictable operation of the all-wheel-drive system. The transmission control unit works in harmony with vehicle systems such as traction control and electronic stability control, which is particularly important during dynamic driving.

Thanks to a design optimized for diesel units, the transmission handles long-distance highway driving and the loads typical of daily use well. Selecting the correct transmission for the fuel type and drivetrain configuration reduces the risk of malfunctions and facilitates future service diagnostics.

Application in the Audi A6 C6 3.0 TDI Quattro drivetrain

In combination with the diesel engine and quattro system, this automatic transmission is responsible for:

• transferring high torque to all wheels in a controlled and predictable manner,
• maintaining appropriate gear ratios for city and highway driving,
• increasing driving comfort through automatic gear shifting without the need for clutch operation,
• stable cooperation with the vehicle's electronic safety systems.

Choosing a transmission from the same family as the factory part allows for maintaining the consistency of the entire drivetrain, which is especially crucial for all-wheel-drive vehicles.

Condition, verification, and installation aspects

The offered transmission belongs to the Automatic transmissions group by Audi and is a used component, which allows for cost-effective vehicle repair while maintaining the original design. Choosing a transmission from this category is beneficial for workshops and users who want to restore factory drivetrain performance without resorting to aftermarket replacements of uncertain origin.

Before installation, standard workshop procedures are recommended: checking for leaks, verifying mounting points, preparing the oil cooling system, and using the appropriate transmission fluid in accordance with the manufacturer's requirements. Properly performed installation and transmission adaptation in the vehicle allow for restoring the correct operation of the automatic unit and ensuring stable performance in daily use.

Repair expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Audi and need other components from the same group, such as a torque converter, control elements, or additional transmission parts, check the available parts in the Audi automatic transmissions category.

For users and workshops who want to better understand the differences between manual, automatic, and DSG transmissions and learn practical tips when purchasing a used gearbox, the following guide will be helpful: Transmission: manual, automatic, or DSG – common faults and a guide to buying a used gearbox. This will help you better assess how to choose the right transmission for a specific vehicle configuration and what to pay attention to during installation.