Audi S4 A4 B8 Adblue Hose Line Tube Pipe 8K0131987B

The Audi S4 A4 B8 AdBlue Hose Pipe Tube is an original component of the AdBlue dosing system, designed for Audi A4 B8 and S4 models. Being a genuine part from the Audi group, it ensures a perfect fit, stable fluid transfer, and safe operation of the entire exhaust emission reduction system. This is a practical solution for users who want to restore the proper functionality of their AdBlue system without compromising on compatibility.

Specifications and technical data

• SKU: 8K0131987B
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0131987B
• Substitutable numbers: 8K0131987B, 8K0 131 987 B
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and Function in the AdBlue System

This hose belongs to the Hoses, Pipes, and Tubes category and is responsible for the leak-free and stable transfer of the AdBlue solution between system components. In Audi A4 B8 and S4 vehicles, it plays a crucial role in:

• maintaining the correct flow of the agent to the exhaust system,
• ensuring the proper operation of the Nitrogen Oxide (NOx) reduction system (SCR),
• minimizing the risk of leaks and pressure drops in the system.

Thanks to its design conforming to manufacturer standards, the hose works seamlessly with factory connectors and mounting points, facilitating installation and subsequent operation.

Benefits of Using an Original Audi Hose

Using an original AdBlue hose in the Audi A4 B8 / S4 allows you to maintain system performance parameters as intended by the manufacturer. In practice, this means:

• secure fit to factory brackets and routing in the engine bay and undercarriage,
• maintaining the correct hose diameter and geometry, which promotes stable fluid flow,
• reducing the risk of AdBlue system errors caused by leaks or improper installation of aftermarket parts.

For users who want to maintain the efficiency of their exhaust purification system and avoid diagnostic issues, choosing an original part is a technically sound solution.

Component Characteristics and Installation

The AdBlue hose is designed to operate in demanding temperature and chemical conditions typical for urea solution dosing systems. The hose's construction is engineered to:

• ensure resistance to the AdBlue solution and external factors,
• maintain the flexibility needed for routing in tight installation spaces,
• minimize stress at connection points with other system components.

When replacing, it is recommended to maintain the original hose routing and check the condition of connectors and mounting points, which ensures trouble-free operation after installation.

Product Condition and Service Application

This component is a used part, making it an attractive cost-effective alternative to new OEM components while retaining factory geometry and compatibility. This type of hose is suitable for both standard AdBlue system repairs and comprehensive system overhauls following mechanical or corrosion-related failures.

Related Components and Technical Knowledge

If you are planning a more extensive service on your Audi's agent dosing system and need other parts from the category of hoses, pipes, and tubes dedicated to this brand, check the available parts in the Audi Hoses, Pipes, and Tubes category.

During service work on fuel supply and exhaust purification systems, knowledge about typical symptoms of wear in diesel engines can also be helpful – you can find more information in the article Diesel Injector Failures – How to Recognize Them and What Neglecting Them Entails.