Audi A5 8T Rear Wheel Bearing Hub Left N/S Knuckle 8K0505431AE

The Audi A5 8T Rear Left Wheel Hub Assembly is a factory-original suspension component from the Bearings, Wheel Hubs, and Bushings group, designed for installation on the rear left axle of the vehicle. Audi's original design ensures correct suspension geometry, stable wheel guidance, and predictable vehicle behavior during braking and acceleration.

Specifications and technical data

• SKU: 8K0505431AE-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0505431AE
• Substitutable numbers: 8K0505431AE, 8K0 505 431 AE
• Location on the vehicle: Rear, Left
• Category: Wheel Bearings, Hubs & Seals

Purpose and Function in the Audi A5 8T Suspension

The rear left wheel hub assembly in the Audi A5 8T is responsible for precise wheel guidance, transferring loads from the suspension to the body, and stable bearing seating. This component works in conjunction with control arms, the shock absorber, and the braking system, making its proper condition directly impact driving safety and predictable vehicle handling.

Thanks to its factory geometry and appropriately selected mounting points, the hub assembly helps maintain correct wheel camber and toe angles, which reduces uneven tire wear and improves ride comfort.

Construction and Key Technical Features

The presented wheel hub assembly belongs to the Bearings, Wheel Hubs, and Bushings category, meaning it is a load-bearing suspension element designed to withstand significant dynamic loads. The construction was engineered by Audi with stiffness, resistance to deformation, and proper distribution of forces acting on the suspension during driving in mind.

Its placement on the vehicle, specified as rear left, ensures unambiguous compatibility with the specific side of the rear axle, minimizing the risk of errors in part selection and facilitating service work.

Component Condition and Benefits of Choosing a Used Part

The wheel hub assembly is offered as a used part, sourced from disassembly, allowing for economical suspension repair while maintaining the original manufacturer's specifications. Choosing a component from the aftermarket is particularly beneficial for structural parts where factory fit and compliance with Audi's engineering design are crucial.

For many Audi A5 8T owners, a used wheel hub assembly represents a sensible compromise between repair cost and maintaining the vehicle's driving parameters, especially when they aim to preserve the original suspension characteristics.

If you want to better understand how to safely choose aftermarket parts and what to look for when buying, it's worth reading the article discussing myths and facts about disassembled parts: Used Car Parts: Myths and Facts You Need to Know.

Selection, Installation, and Service Aspects

When selecting a wheel hub assembly for the Audi A5 8T, matching it to the specific axle and side of the vehicle is crucial. Therefore, the product specification includes the vehicle placement, which helps the mechanic or end-user correctly identify the part. After installation, wheel alignment is recommended to fully utilize the suspension's design properties.

Replacing the wheel hub assembly is particularly recommended in situations of mechanical damage (e.g., after a collision or hitting a curb), when play appears in the mountings, or when visible deformations affect suspension geometry. Using an original Audi part helps restore straight-line stability and proper interaction with other suspension components.

If you are interested in a broader comparison of suspension solutions and practical tips for selecting used components, the guide may be helpful: Stock vs. Sport Suspension – Construction Differences and Is It Worth Buying Used Suspension Parts?.

System Expansion – Other Category Elements for Audi

During comprehensive suspension repair, it's worth considering replacing other components that work with the hub and assembly, such as wheel bearings or bushings, to minimize the need for future service interventions. If you are planning more extensive work on your car's suspension system and need additional parts from the same group, check the available parts in the Audi Bearings, Wheel Hubs, and Bushings category.