Audi A4 S4 B8 A5 S5 8T Fuel Line Hose Tube Pipe Temperature Sensor 059130299A

Audi A4 S4 B8 A5 S5 8T Fuel Line Hose Tube Pipe Temperature Sensor is a precision fuel system component designed for Diesel engines in Audi vehicles. It is responsible for the accurate measurement of fuel temperature within the line, which has a direct impact on the stable operation of the engine and the correct dosing of diesel fuel.

Specifications and technical data

• SKU: 059130299A
• Mark: Audi
• Condition: Used
• OEM Part Number: 059130299A
• Substitutable numbers: 059130299A, 059 130 299 A
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Function of the fuel line temperature sensor

The fuel line temperature sensor in the Audi A4, S4 B8 and A5, S5 8T works with the engine control electronics, transmitting information about the current temperature of the diesel fuel in the system. Based on this signal, the controller can appropriately adjust the fuel dose, injection timing, and operating strategy, which promotes smooth engine operation, reduces smoke, and maintains correct combustion parameters.

Using a functional sensor in the Diesel fuel system helps reduce the risk of cold start problems, power drops under heavy load, and improper injector operation. This is particularly important in modern diesel units, where measurement precision has a direct impact on component durability.

Construction and purpose in the fuel system

The offered item belongs to the Lines, hoses, and pipes group, as it works directly with the fuel line, monitoring operating conditions inside it. The sensor is mounted in such a way that it has constant contact with the flowing diesel fuel, which enables rapid response to temperature changes in real time.

The solution used in the Audi A4, S4 B8 and A5, S5 8T has been designed to work in the demanding environment of the engine bay, taking into account vibrations, ambient temperature changes, and contact with fuel. As a result, the sensor maintains stable measurement parameters under typical vehicle operating conditions.

Benefits of using an original Audi sensor

Using an original Audi solution in the fuel system ensures:

• signal consistency with the requirements of the factory engine controller,
• proper fitment to the fuel line in the specific model,
• preservation of the factory operating characteristics of the diesel unit,
• reduction of the risk of diagnostic errors related to incorrect fuel temperature readings.

In the case of Diesel engines, precise fuel temperature measurement is important both for engine refinement and for the wear of fuel injection system components. A properly selected sensor helps maintain stable parameters over the long term of operation.

Condition of the item and service application

The presented sensor is offered as a used part, which allows for an economical repair of the fuel system while maintaining the original Audi design specifications. This type of component is particularly useful when diagnosing starting problems, rough running when cold, or recurring errors related to fuel temperature in the controller's memory.

Before installation, it is recommended to perform a standard verification of the electrical system and the fuel line to ensure proper operating conditions for the sensor after replacement. A properly selected and functional element allows for the restoration of correct engine operating parameters without the need for interference with other fuel system components.

Expansion of the Audi fuel system – related items

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other items from the same group, such as flexible hoses, rigid pipe sections, or additional fuel line branches, check out the available parts in the Audi lines, hoses, and pipes category.

If you are considering a broader service or tuning project using aftermarket components and want to avoid common mistakes when selecting parts, it is worth reading the practical tips contained in the article Buying used car parts – the most common mistakes when choosing parts for tuning.