VW Golf MK5 Audi A3 8P LNY Manual Gearbox Transmission Flange 02A409343C

VW Golf MK4 Audi A3 8P LNY Gearbox Flange Shaft is a precision component in the Manual Gearbox Parts category, designed for manual transmissions. The original Audi design ensures proper torque transfer and a stable connection between the gearbox and other drive components, leading to predictable system operation and correct assembly geometry.

Specifications and technical data

• SKU: 02A409343C
• Mark: Audi
• Condition: Used
• OEM Part Number: 02A409343C
• Substitutable numbers: 02A409343C, 02A 409 343 C, 02A409355D, 02A 409 355 D
• Gearbox type: Manual
• Category: Manual Transmission Parts

Purpose and Function in the Drivetrain

The presented flange shaft is a dedicated component for manual gearboxes in VW Golf MK4 and Audi A3 8P models with the LNY engine. It is responsible for the rigid, axial connection of the transmission to the rest of the drivetrain, which directly impacts:

• correct torque transfer without unwanted play,
• maintaining proper positioning of cooperating elements,
• reduction of vibrations resulting from manual gearbox operation.

By maintaining the factory assembly geometry, the flange shaft supports stable gearbox operation and minimizes the risk of accelerated wear of adjacent components.

Construction, Fitment, and Compatibility

As a component within the Manual Gearbox Parts group, the flange shaft has been designed for specific mounting points and the characteristics of the manual transmission used in the VW Golf MK4 and Audi A3 8P. Appropriately selected flanges and mating surfaces enable:

• seamless integration with the original gearbox,
• maintaining axial alignment with other drive components,
• limiting stress resulting from system operation under variable load.

Such precise fitment is particularly important in vehicles subjected to intensive use, where the manual gearbox operates across a wide range of RPMs and loads.

Characteristics of a Used Part

The offered flange shaft is a used part, sourced from disassembly, which allows for maintaining the original assembly specifications while optimizing service costs. This type of component is often chosen in situations where:

• a quick replacement of a damaged part is necessary without structural modifications,
• preserving the factory manufacturing standard is a priority,
• compatibility with other elements of the original drivetrain is important.

Choosing an original, used component helps avoid problems typical of aftermarket parts with imprecise dimensions or different material characteristics.

Benefits of Using an Original Flange Shaft

Using this component in a manual gearbox offers a range of practical service and operational benefits:

• Factory Fitment – maintaining original geometry and mounting points simplifies installation and reduces workshop labor time.
• Drivetrain Cohesion – compatibility with the VW Golf MK4 and Audi A3 8P construction supports predictable vehicle behavior under load.
• Stable Manual Transmission Operation – proper connection of the gearbox to the rest of the drivetrain promotes smooth gear changes and reduces unwanted vibrations.

Selection by Numbers and Additional Materials

To precisely verify the compatibility of the flange shaft with a specific version of the VW Golf MK4 or Audi A3 8P, it is advisable to use the OEM part number and available interchangeable numbers assigned to this component. In workshop practice, this significantly reduces the risk of ordering an incompatible part and speeds up the service process.

If you want to streamline the process of selecting components by manufacturer designations and avoid mistakes in online purchases, use the practical tips contained in the article Risk-Free Online Parts Shopping – 5 Proven Ways to Verify Component Compatibility by OEM Numbers and Paint Codes, which discusses, among other things, methods for working with numbers used by car manufacturers.

If, during the modernization or repair of the drivetrain, you are also planning to service transmissions in other Audi models and need additional components that cooperate with manual transmissions of this brand, check the available parts in the Audi Manual Gearbox Parts category.