Audi A4 B9 Suspension Leg Rear Left N/S Wheel Carrier Brake Disc Caliper
SKU: 8W0505431Q-2
Product from a certified dismantling facility
Condition:
Used
Available:
1
Delivery time:
Estimated delivery Tue, Sep 15
Dispatched today if paid before 14:00
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60 days return for UK 30 days return for other countries
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£142.95
1
Lowest price in the last 30 days: £142.95
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£142.95
Audi A4 B9 Suspension Leg Rear Left N/S Wheel Carrier Brake Disc Caliper with wheel hub carrier, brake disc, and brake caliper is a complete, factory-spec solution designed for the rear axle on the driver's side. It is a practical choice for users who want to restore suspension geometry and ensure the proper operation of the running gear and braking system in a single component. By maintaining the original design, the set ensures proper wheel tracking, stability, and predictable vehicle handling.
Specifications and technical data
- SKU: 8W0505431Q-2
- Mark: Audi
- Condition: Used
- OEM Part Number: 8W0505431Q
- Substitutable numbers: 8W0505431Q, 8W0 505 431 Q, 8W0615403, 8W0 615 403, 8W0615601C, 8W0 615 601 C
- Location on the vehicle: Rear, Left
- Category: Suspension Component Replacement Kits
Purpose and function in the suspension system
The described assembly is a rear suspension component on the left side, responsible for the stable mounting of the wheel hub and integration with the braking system. It combines the load-bearing function of the suspension with the wheel-guiding function in a single module, which has a direct impact on:
- maintaining the correct rear axle geometry,
- even load distribution to the chassis,
- vehicle stability during braking and acceleration,
- precise vehicle handling in corners. Thanks to this, the complete rear suspension assembly with wheel carrier and brake components helps reduce the risk of incorrect assembly of multiple individual parts and facilitates maintenance.
Benefits of using a complete rear suspension assembly
Choosing a complete rear suspension module with wheel carrier, brake disc, and caliper is particularly beneficial for post-accident repairs or after intensive use. Instead of selecting individual components, the mechanic receives a coherent set that:
- simplifies the installation process and reduces repair time,
- reduces the risk of component mismatch,
- makes it easier to maintain factory mounting points and suspension kinematics,
- allows for the restoration of the running gear and braking system efficiency in a single step. For the user, this means more predictable vehicle handling, improved driving comfort, and consistent rear axle performance in daily driving conditions.
Characteristics of the original Audi component
The offered assembly comes from the Audi production line, which means maintaining factory design parameters, mounting spacings, and compatibility with other suspension and brake components in the A4 B9 model. Original manufacturing translates into:
- proper fitment with control arms and other rear axle elements,
- compatibility with the vehicle's stock braking system,
- preservation of the stiffness and durability designed by the manufacturer. As a used original part, the assembly represents a reasonable compromise between repair costs and maintaining the factory handling and braking characteristics.
Professional installation and selection of used suspension components
When replacing the rear suspension assembly with wheel carrier and brake components, it is crucial to properly tighten all mounting points and check the geometry after installation. It is recommended that the installation be performed by a workshop equipped with the appropriate tools for setting alignment and camber, which will allow you to fully utilize the potential of this component and avoid uneven tire wear. If you want to deepen your knowledge about the differences between stock and sports suspension configurations and make informed choices when selecting used components, the following article will be helpful: Stock vs. sports suspension – design differences and choosing used parts.
Expansion and modernization of the Audi rear suspension
If you are planning a comprehensive repair or upgrade of the suspension area in your Audi and need other elements from the same group, such as additional control arms, bushings, or other complete rear axle modules, check out the available parts in the Audi suspension replacement kits category.
Delivery details
Ship to: United Kingdom
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Estimated delivery dates include sellers dispatch time, origin postcode,destination postcode and time of acceptance, and will depend on the postage service selected and receipt of cleared payment. Delivery times may vary, especially during peak periods.
Will usually dispatch within same working day if paid before 14:00 BST (excludes weekends and holidays). Expected dispatch time may vary and is based on sellers order cut-off time.
In the automotive store Global Parts, we offer fast and secure deliveries for our customers in United Kingdom, ensuring maximum compliance with local service standards. Each order is processed with the utmost attention, guaranteeing a fluid shopping process and a timely delivery. If you need assistance in choosing the right part, our team of consultants will be happy to help you find the right part for your vehicle and provide information on installation, availability and parameters of the selected components.










