Audi A4 B8 A5 8T High Pressure Fuel Pump 2.0 TFSI CDNC 06J127025F

Audi A4 B8 A5 8T High Pressure Fuel Pump 2.0 TFSI CDNC is a component from the Fuel pumps and level sensors group, designed for TFSI petrol engines. This used, original high-pressure pump ensures a stable fuel supply to the engine unit, which translates into smooth engine operation and correct combustion parameters.

Specifications and technical data

• SKU: 06J127025F
• Mark: Audi
• Condition: Used
• OEM Part Number: 06J127025F
• Substitutable numbers: 06J127025F, 06J 127 025 F, 06J 127 025 L, 06J127025L
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel system

The high-pressure pump in the 2.0 TFSI CDNC engine is responsible for precisely delivering petrol to the fuel rail at the appropriate high operating pressure. It is a key component for:

• maintaining the correct air-fuel mixture ratio,
• stable engine operation across the full load range,
• proper functioning of the direct injection system,
• reducing engine knocking and power drops.

A properly selected high-pressure pump helps reduce issues with starting, jerking during acceleration, and performance drops, which often result from incorrect fuel pressure.

Benefits of using an original Audi pump

The original pump from the Fuel pumps and level sensors group is designed for the specific characteristics of the TFSI engine, which ensures:

• factory fitment to the cylinder head and pump drive,
• proper cooperation with the factory engine control unit (ECU),
• appropriate pressure characteristics across the entire RPM range,
• maintenance of exhaust emission parameters intended for the given engine.

As a result, installation is straightforward without the need for modifications, and the fuel system maintains parameters close to factory specifications. This is particularly important in direct-injection petrol units, where operating tolerances are narrow and component quality has a direct impact on engine durability.

Technical and fuel characteristics

The presented pump is designed for engines powered by petrol, which means it complies with the requirements of direct injection systems used in TFSI units. The pump's construction is adapted for operation at high operating pressures typical of modern turbocharged petrol engines.

In practice, this means:

• stable fuel pressure during dynamic driving,
• proper response to sudden load changes,
• better engine refinement across the entire RPM range.

Condition, selection, and service application

The pump is a used component, which in workshop practice represents a reasonable compromise between repair costs and maintaining the manufacturer's original specifications. When selecting, it is worth paying attention to compatibility with the engine code and fuel type to avoid issues with installation and system operation.

Replacing the high-pressure pump is often recommended in the case of:

• power drops at higher RPMs,
• fuel pressure errors recorded by the ECU,
• starting problems on a warm engine,
• uneven engine operation under load.

For workshops and individual users, using an original, used pump can significantly reduce vehicle downtime and limit costs compared to purchasing a new component.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as low-pressure pumps, fuel level sensors, or power modules, check out the available parts in the Audi fuel pumps and level sensors category.

When working with fuel systems and engine control, it is also worth learning about the specifics of used electronic components – you will find practical tips in the article The second life of electronics – when is it worth choosing used engine ECUs, comfort modules, and parking sensors?.

If you are interested in how the availability of used OEM parts affects repair time and workshop organization, the material on the impact of immediate availability of car parts on service time may also be helpful, showing how quickly a good fuel pump can restore vehicle performance.