Audi A4 B8 A5 8T Rear Wheel Hub Wheel Bearing Housing Left N/S 8K0505431AP

Audi A4 B8 A5 8T Rear Wheel Hub Wheel Bearing Housing Left N/S is an original chassis component from the Wheel bearings, hubs and bushings group, designed for installation on the rear left axle. It provides a solid foundation for proper wheel guidance, stable suspension geometry, and safe load distribution in your Audi.

Specifications and technical data

• SKU: 8K0505431AP-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0505431AP4
• Substitutable numbers: 8K0505431AP, 8K0 505 431 AP, 8K0505435AB, 8K0 505 435 AB
• Location on the vehicle: Rear, Left
• Part type: Wheel Bearing
• Category: Wheel Bearings, Hubs & Seals

Purpose and function in the suspension system

The rear wheel hub and bearing housing is responsible for precise wheel guidance, transferring forces from the suspension to the body, and providing a stable seat for the wheel bearing. Its position on the vehicle as rear – left side means that the component is structurally matched to a specific location in the chassis, which is crucial for geometry, wheel alignment, and the overall performance of the suspension.

A properly selected hub and bearing housing reduces the risk of uneven tire wear, improves stability during braking and acceleration, and supports even load distribution across suspension components and the vehicle body.

Compatibility with Audi models

The presented component has been designed for the platform used in Audi A4 B8 and Audi A5 8T models. This ensures that factory mounting points, correct geometry, and compatibility with the stock suspension design of these models are maintained.

As a result, the rear left wheel hub and bearing housing allows for maintaining the driving parameters specified by the manufacturer without the need to modify other components. This is a particularly beneficial solution for post-accident repairs, replacing worn-out parts, or restoring the vehicle to a factory-like condition.

Component characteristics and advantages

As a part from the Wheel bearings, hubs and bushings group, the rear wheel hub and bearing housing performs several key technical functions:

• ensures a stable seat for the wheel bearing and its axis of rotation,
• serves as a mounting point for suspension components and the braking system,
• maintains the correct wheel geometry relative to the body and other wheels,
• transfers dynamic loads generated during driving, braking, and traversing uneven surfaces.

Using an original Audi component helps maintain the structural integrity of the vehicle, which translates into predictable road behavior and easier diagnostics of potential future faults.

Used condition – a conscious technical choice

The offered item is in used condition, which represents a reasonable compromise between repair costs and maintaining original build quality. For many Audi A4 B8 and A5 8T owners, choosing a used hub and bearing housing is an effective way to restore full suspension functionality while keeping expenses down.

If you want to better understand how to safely and consciously use the secondary market, it is worth reading an article discussing common beliefs about such parts – you can find it here: Used car parts: myths and facts you need to know.

Expanding repairs within the Audi chassis system

If you are planning a comprehensive repair or upgrade of the chassis area in your Audi and need other components from the same group, such as additional hubs, wheel bearings, or suspension bushings, check out the available parts in the Audi wheel bearings, hubs and bushings category.