Audi A6 C8 Suspension Leg Wheel Carrier Bearing Brake Disc Caliper Rear Left N/S

The Left Rear Suspension Assembly for Audi A6 C8 is a complete, used module comprising the wheel hub carrier, bearing, brake disc, and caliper, designed for installation on the driver's side rear axle. Featuring Audi's factory design, this component ensures consistent mechanical fitment and proper integration with the vehicle's chassis and braking system. It's a practical solution for post-accident repairs, replacement of worn components, or comprehensive rear suspension overhauls.

Specifications and technical data

• SKU: 4K0505431C-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 4K0505431C
• Substitutable numbers: 4K0505431C, 4K0 505 431 C, 4N0501203, 4N0 501 203, 8W0615403K, 8W0 615 403 K, 8W0615601E, 8W0 615 601 E
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Vehicle Application and Placement

This assembly is intended for installation on the left rear side of the vehicle, which is crucial for suspension geometry and proper wheel guidance. Integrating the hub carrier, bearing, disc, and caliper into a single module simplifies servicing, reduces the number of individual assembly operations, and helps maintain the correct alignment of components.

A complete set configured this way is particularly useful when multiple sub-assemblies are damaged simultaneously – for instance, after an impact to the rear suspension or due to significant wear of the braking system combined with wheel bearing play.

Assembly Design and Installation Benefits

The kit includes key components responsible for wheel guidance and brake force transfer. The hub carrier serves as the structural base to which control arms, the hub with bearing, and the braking system are attached. Having the disc and caliper in one module allows for:

• maintaining the factory position of the caliper relative to the disc,
• reducing the risk of assembly errors during system reassembly,
• more efficient restoration of the rear axle's full functionality.

For the user, this translates to more predictable vehicle behavior during braking and more stable cornering, provided correct installation and geometry alignment.

Characteristics as a Used Part

This component is from a dismantled vehicle and is classified as a genuine used Audi part. Such sub-assemblies are often chosen for repairs where maintaining the factory design and reducing costs compared to new parts are priorities. Before installation, standard operational checks are recommended, including inspecting the disc's working surfaces, the bearing's smooth operation, and the caliper's free movement.

Opting for a complete rear suspension module with integrated brakes allows for fewer separately sourced parts and simplifies matching to a specific Audi A6 C8 version, which is important for the complex architecture of modern chassis systems.

Compatibility and Replacement Numbers

This assembly belongs to the Suspension Replacement Kits group and has an assigned OEM part number and related interchangeable numbers, facilitating compatibility verification with a specific vehicle configuration. Before purchasing, it is advisable to compare the markings with service documentation or the dismantled part to confirm full compatibility with your Audi A6 C8 version.

The presence of reference numbers also allows for more efficient comparison of this module with other variants used in related Audi models, which is significant for part selection in professional workshops.

Practical Application and Technical Support

A left rear suspension assembly configured this way is suitable for both routine repairs and larger restoration projects where component consistency and minimizing vehicle downtime are important. Choosing genuine used components is often a sensible compromise between cost and maintaining the driving characteristics intended by the manufacturer.

If you are planning a comprehensive repair or upgrade of the rear suspension area in your Audi and need other parts from the same group, such as hub carriers, control arms, or complete hub modules, check the available parts in the Audi Suspension Replacement Kits category.

For drivers considering broader use of used components in premium vehicles, an article discussing the advantages and specifics of using genuine dismantled parts may be helpful – you can find more on this topic in the material Used Mercedes Parts – Genuine Dismantled Components, whose conclusions can also be applied to service practices in Audi vehicles.