Audi A4 B9 Seat Belt Seatbelt Black Rear Left N/S 8W0857805B

Audi A4 B9 Seat Belt Black Left Rear is an original part from the seat belts and parts category, designed for installation on the rear seat. The component was designed by the vehicle manufacturer, ensuring proper fit to the body structure and compliance with factory mounting points.

Specifications and technical data

• SKU: 8W0857805B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0857805B
• Substitutable numbers: 8W0857805B, 8W0 857 805 B
• Location on the vehicle: Rear, Right
• Color: Black
• Category: Seat Belts & Parts

Intended Use and Fit for Audi A4 B9

The presented seat belt is dedicated to the Audi A4 B9 generation model and is installed on the rear seat on the appropriate side of the vehicle. Thanks to the factory design, the correct geometry of the webbing path is maintained, which contributes to the proper operation of the locking mechanism and the comfort of rear-seat passengers.

The component works with the original mounting points in the body, which facilitates installation and maintains consistency with the vehicle's safety system. The absence of the need for body or mounting modifications reduces the risk of installation errors.

Construction, Color Scheme, and Interior Integration

The belt has a black color scheme, making it harmoniously blend with standard Audi A4 B9 interior configurations. The neutral shade facilitates matching with various upholstery and cabin trim variants, maintaining a cohesive, factory look.

The retractor mechanism and webbing have been designed for stable operation under typical usage conditions. The construction ensures:

• smooth webbing retraction after unbuckling,
• controlled locking during sudden jerks or abrupt braking,
• ergonomic routing along the pillar and seat, adapted to the Audi body geometry.

Item Condition and Service Application

The seat belt comes from secondary circulation, making it an attractive option for post-accident repairs, replacement of worn components, or completing missing interior elements. Choosing an original component from this category helps maintain the factory character of the safety system and avoid compatibility issues typical of aftermarket parts of uncertain origin.

This type of solution is particularly useful when it is necessary to replace a single belt on the rear seat without interfering with other system components.

Benefits of Using an Original Seat Belt

Using a factory seat belt in the Audi A4 B9 offers a range of practical benefits:

• Proper body fit – maintaining the correct webbing length and routing geometry.
• Consistency with other belts – uniform appearance and operation of all mounting points on the rear seat.
• Compatibility with factory mountings – no need for adapter brackets or bolts.
• Maintaining safety system functionality – the belt works with other system components in the vehicle.

Audi Seat Belts and Parts – Selecting the Right Components

If you also need other components from the Audi seat belts and parts category, check out our dedicated offer: Audi seat belts and parts. This will allow you to easily assemble a cohesive set of components for your vehicle, maintaining compliance with the manufacturer's solutions.

How to Verify Compatibility Using OEM Numbers

When selecting a seat belt for a specific Audi A4 B9 version, it is crucial to compare data with the vehicle's documentation and manufacturer information. It is advisable to use catalog numbers and factory markings to avoid ordering errors. Detailed instructions on verifying part compatibility using numbers can be found in the guide: Risk-Free Online Parts Shopping – 5 Proven Ways to Verify Component Compatibility by OEM Numbers and Paint Codes.