Audi A3 8P A4 B8 2.0 TDI Fuel Injector Fuel Injection Nozzle 03L130277J

Audi A3 8P A4 B8 2.0 TDI Fuel Injector Diesel is an original fuel system component designed for Audi diesel engines, ensuring precise fuel delivery and stable engine operation. This product, from the injector nozzles category, has been designed to maintain the factory operating parameters of the 2.0 TDI engine, which translates to improved running smoothness, performance, and fuel economy.

Specifications and technical data

• SKU: 03L130277J
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L130277J
• Substitutable numbers: 03L130277J, 03L 130 277 J
• Category: Fuel Injectors

Intended Use and Technical Characteristics

The diesel fuel injector for Audi A3 8P and A4 B8 2.0 TDI is a component of the common rail injection system, responsible for atomizing diesel fuel into the combustion chamber under high pressure. Its precise design allows for the correct fuel spray pattern, supporting efficient mixture combustion and reduced exhaust emissions.

The original Audi design ensures:

• stable injection parameters across the full engine load range,
• correct fuel spray formation tailored to the 2.0 TDI combustion chamber,
• compatibility with factory ECU control, without the need for software modifications.

Benefits of Using an Original Injector Nozzle

Using a factory-spec injector nozzle in the 2.0 TDI engine allows for operating parameters close to the vehicle's original condition. In practice, this means:

• smoother engine operation at idle and under load,
• better throttle response due to accurate fuel metering,
• reduced smoking and unwanted vibrations resulting from incorrect injection,
• maintaining factory fuel consumption while preserving adequate power and torque.

For Audi owners, it is particularly important that using a component from the injector nozzles category that complies with factory specifications reduces the risk of starting problems with both warm and cold engines and lessens the load on other fuel system components.

Product Condition and Service Application

The offered injector is a used part, making it an attractive cost-effective alternative compared to new components, especially for repairs on older Audi A3 8P and A4 B8 models with the 2.0 TDI engine. This type of part can be used as a replacement for a damaged injector or as part of a comprehensive fuel system service when multiple components need replacement simultaneously.

Before installation, it is recommended to:

• perform a computer diagnosis of the vehicle's injection system,
• verify the operating parameters of each cylinder,
• check the fuel system for leaks and the condition of the fuel filter.

Injection System Diagnostics and Prevention

A malfunctioning injector nozzle can cause a range of symptoms – from rough engine running and power loss to increased fuel consumption and the risk of damage to pistons or the particulate filter. To better understand the symptoms and consequences of neglecting this area, it is worth reading the guide: diesel injector faults – symptoms, consequences, and diagnostics. Knowledge in this area makes it easier to decide on replacing the injector at the right time.

Audi Injector Nozzles – Selection and Offer

If you are also looking for other components from the Audi injector nozzles category for your car, check out our dedicated offer: Audi injector nozzles. Focusing on this specific product group makes it easier to select the correct injector for a given model and engine version, as well as to compare available service solutions.