Audi A4 S4 B9 Seat Belt Buckle Lower Belt Rear Right O/S Latch 8W0857740D

Audi A4 S4 B9 Seat Belt Buckle Right Rear is an original part from the Seat Belts and Parts category, designed for the rear right side of the vehicle. It ensures secure fastening of the seat belt buckle, contributing to the safe and stable operation of the passive safety system in your Audi.

Specifications and technical data

• SKU: 8W0857740D
• Mark: Audi
• Condition: Used
• OEM Part Number: 8W0857740D
• Substitutable numbers: 8W0857740D, 8W0 857 740 D
• Location on the vehicle: Rear, Right
• Category: Seat Belts & Parts

Purpose and Function of the Part

The presented seat belt buckle is a factory component installed on the rear right side of the vehicle. It is responsible for the mechanical fastening of the belt and maintaining the buckle in its working position, which is crucial for the proper functioning of the safety system during daily car use.

As part of the Seat Belts and Parts group, the buckle works with the seat belt webbing and seat mountings, creating a cohesive system designed by Audi engineers for safety, ergonomics, and compliance with homologation standards.

Benefits of Using an Original Audi Buckle

Using an original seat belt buckle for the Audi A4 / S4 B9 allows you to maintain the factory operating parameters of the system. The key benefits include:

• Full Structural Compatibility – proper fit with the seat, center console, and factory mounting points on the rear right side.
• System Integration – maintaining the belt fastening and release characteristics intended by the manufacturer.
• Stable Buckle Mounting – minimizing play and unwanted movement during driving.
• Correct Operating Geometry – proper guidance of the buckle relative to the passenger's silhouette, promoting predictable system behavior in case of sudden braking.

Installation Characteristics

The rear right seat belt buckle is designed as a component intended for installation in a specific location in the vehicle. This ensures:

• Simplified Servicing – mechanics or experienced users have a clearly defined mounting position, eliminating the need for adaptation.
• Minimized Risk of Errors – no need for modifications or fitting the part to the seat or bodywork.
• Compatibility with Factory Mountings – maintaining the structural integrity of the safety system.

When replacing the buckle, it is recommended to follow the vehicle manufacturer's procedures, including proper tightening of mounting screws and checking the correct operation of the belt fastening and release mechanism after installation.

Why Choose a Used OEM Part

A used, original Audi component is a sensible choice for drivers who want to balance cost control with maintaining factory quality. For parts like a seat belt buckle, it is particularly important to:

• Maintain Original Construction – no compromises in the area of passive safety.
• Cost Savings Compared to New Parts – possibility of reducing service costs while retaining an OEM component.
• Better Fit Than Aftermarket Replacements – factory dimensions and operating geometry.

If you want to learn more about optimizing repair costs while maintaining quality, check out the article: Rising Repair Costs vs. the Boom in Used Parts – How to Save on Car Servicing?. You'll find practical tips on how to safely choose used OEM parts.

Audi Seat Belts and Parts – Component Selection

When modernizing or repairing the safety system, it is also worth considering other parts from the Seat Belts and Parts category dedicated to this brand. If you are looking for additional solutions for your car, check out the available Audi Seat Belts and Parts to select components that are structurally consistent with your model.

Summary

The Audi A4 S4 B9 Seat Belt Buckle Right Rear is a factory part designed for the rear right side of the vehicle, responsible for the proper fastening of the seat belt. Choosing an original, used buckle allows you to maintain the correct operation of the safety system, preserve compatibility with the seat and bodywork structure, and optimize service costs without compromising on solutions intended by Audi.