Audi A3 8P 1.4 TFSI CAXC Manual Gearbox 6-Speed NBX 0AJ300041J WARRANTY

Listing details

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

Audi A3 8P 1.4 TFSI CAXC Manual Gearbox 6-Speed NBX is an original, used gearbox from the Manual gearboxes group, designed for 1.4 TFSI petrol engines. The 6-speed manual design ensures precise gear shifting and efficient torque transfer under typical operating conditions.

Specifications and technical data

• SKU: 0AJ300041J-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 0AJ300041J
• Substitutable numbers: 0AJ300041J, 0AJ 300 041 J, 0AJ300041JX, 0AJ 300 041 JX, 0AJ300042D, 0AJ 300 042 D
• Fuel type: Petrol
• Gearbox type: Manual
• Part type: Manual Transmission
• Category: Manual Transmission

Technical characteristics of the 6-speed gearbox

The presented gearbox belongs to the Audi Manual gearboxes group, designed to work with TFSI petrol engines. The use of six gears allows for optimal gear ratios – lower gears support dynamic acceleration and flexibility in city driving, while higher gears favor relaxed extra-urban driving and stable engine RPM.

The manual selector mechanism provides a direct, mechanical connection to the drivetrain, which makes it easier for the driver to control the engine's performance. The gearbox is structurally adapted to the characteristics of the 1.4 TFSI CAXC engine, which translates into consistent operation of the entire drivetrain.

Purpose and compatibility

The gearbox was developed for the Audi A3 8P model with a 1.4 TFSI CAXC petrol engine, where a manual gearbox with six speeds is required. This makes it the right choice when replacing a damaged gearbox unit in vehicles with this specific fuel type and drivetrain configuration.

Selecting a gearbox for a specific car should always take into account the vehicle's technical parameters, such as engine type, fuel type, and the drivetrain system used. Proper matching allows for maintaining the factory performance characteristics of the drive and reduces the risk of installation problems.

Benefits of using an original used gearbox

An original gearbox from the Audi group, even in a used condition, retains the factory design solutions and parameters specified by the manufacturer. In practice, this means:

• maintaining the gear ratios specified by the manufacturer,
• consistency with the factory drivetrain and control system,
• reducing the risk of incompatibility compared to replacements of uncertain origin.

For many users, this is a reasonable alternative to costly regeneration, especially when they want to maintain the original performance characteristics of the drive and predictable vehicle behavior in daily use.

Practical application and maintenance tips

When installing the gearbox in an Audi A3 8P 1.4 TFSI CAXC, it is recommended to perform full maintenance of the drivetrain system: check the clutch, release bearing, mounting bushings, and use the appropriate transmission oil in accordance with the manufacturer's recommendations. This approach allows you to fully utilize the potential of the gearbox and reduce the risk of future failures.

During operation, it is worth paying attention to typical symptoms of manual transmission wear, such as difficult gear shifting, noise under load, or oil leaks. Early reaction to disturbing signals helps avoid more serious damage and extends the life of the entire drivetrain.

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

To better assess when replacing a gearbox is more cost-effective than repairing it, and what symptoms indicate manual transmission wear, it is worth reading the guide: Manual gearbox failures in cars – why is an original used part a more sensible choice than regeneration?