Audi A4 B9 A5 F5 Wheel Carrier Wheel Hub Axle Mount Rear Left N/S 8W0505431P

Audi A5 F5 2.0 TDI Rear Left Suspension Assembly with hub carrier, caliper, and brake disc is a complete, used module designed for the driver's side rear axle. This solution allows for a consistent replacement of suspension and braking components in a single service process, ensuring stable vehicle handling and predictable brake system operation. By maintaining factory geometry, it is a practical choice for post-accident or wear-related repairs.

Specifications and technical data

• SKU: 8W0505431P
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0505431P
• Substitutable numbers: 8W0505431P, 8W0 505 431 P, 8W0615403M, 8W0 615 403 M, 8W0 615 601 H, 8W0615601H
• Location on the vehicle: Rear, Left
• Category: Suspension Component Replacement Kits

Purpose and Vehicle Placement

The presented suspension assembly is designed for installation on the rear left side of the vehicle, specifically for the Audi A5 F5 generation with a 2.0 TDI engine. It includes key components responsible for transferring loads from the wheel to the body and for interacting with the braking system, which directly impacts:

• maintaining correct rear axle geometry,
• driving stability during braking and acceleration,
• even wear of tires and suspension components.

Components Included in the Assembly

The kit includes the rear left suspension strut with the wheel hub carrier (knuckle/hub) and integrated brake system components – caliper and disc. This configuration allows for:

• consistent replacement of mechanical and braking elements in a single service cycle,
• easier integration with the existing Audi A5 F5 suspension architecture,
• reduced risk of incorrect installation of individual sub-assemblies.

This solution provides the mechanic with an assembly ready for installation as a whole, simplifying repairs after mechanical damage or corrosion.

Benefits of Using an Original Audi Assembly

Using a complete, original suspension assembly in an Audi A5 F5 offers tangible operational benefits. Components sourced from a dismantled vehicle of the same brand retain factory mounting points and operating characteristics, which translates to:

• correct interaction with the stock braking system and safety systems,
• maintenance of the manufacturer's designed connection rigidity,
• easier geometry calibration after installation.

A used suspension assembly is particularly useful for repairs where multiple components have been damaged simultaneously – it allows for fewer individually selected parts and speeds up the service process.

Practical Application in Service

This rear left suspension assembly is suitable for both collision repairs and replacement of worn suspension and braking components. It is a recommended solution in situations where:

• the wheel hub carrier needs to be replaced along with the brake hardware,
• maintaining component consistency from a single vehicle is important,
• minimizing vehicle downtime in the workshop is a priority.

This allows for restoring proper handling and braking effectiveness in the Audi A5 F5 2.0 TDI while maintaining reasonable repair costs.

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

To compare the approach to using premium used components in service, it is worth reading an article describing the use of original dismantled parts in Mercedes-Benz cars: Used Parts for Mercedes – Original Dismantled Components.