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

The Audi A3 8P A4 B8 2.0 TDI Injector Fuel Injector is an original injector nozzle from the Audi group, designed for precise fuel delivery in 2.0 TDI diesel engines. This part comes from a dismantled vehicle, allowing for an economical yet technically sound repair of your car's injection system.

Specifications and technical data

• SKU: 03L130277J-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 03L130277J
• Substitutable numbers: 03L130277J, 03L 130 277 J
• Part type: Fuel Injector
• Category: Fuel Injectors

Technical Characteristics of the Audi 2.0 TDI Injector

The fuel injector for Audi A3 8P and A4 B8 2.0 TDI belongs to the injector nozzles category, responsible for shaping the fuel spray and proper dosing in the combustion chamber. A correctly selected component ensures:

• stable injection pressure across the entire engine load range,
• proper diesel atomization, promoting even combustion,
• maintaining the smooth operation of the 2.0 TDI unit during cold starts and at operating temperature,
• reducing smoke and power loss resulting from a worn injector.

As an OEM Audi part, the injector is structurally matched to the factory fuel system, which facilitates installation and subsequent diagnostics.

Purpose and Application in the Injection System

This fuel injector is dedicated to 2.0 TDI diesel engines used in Audi A3 8P and Audi A4 B8 models. In practice, this means the component works with the factory high-pressure pump, common rail, and engine control unit, maintaining:

• injection characteristic compatibility with ECU maps,
• correct fuel doses in individual operating cycle phases,
• consistency with the exhaust emission control system for the specific 2.0 TDI engine variant.

Selecting the right injector nozzle is crucial for engine durability, fuel consumption, and idle stability. Replacing a worn part with an original used injector is often the most cost-effective solution while maintaining correct operating parameters.

Condition, Verification, and Benefits of Installing a Used Injector

The offered injector is a used part, sourced from a dismantled vehicle. Such components are often chosen for injection system repairs as they help reduce service costs while retaining original construction. Before installation, it is recommended to:

• check for leaks and dose parameters on a diagnostic bench,
• verify proper operation at idle and under load,
• check the injector coding in the engine control unit, if required by the specific system.

A correctly selected and tested used fuel injector can restore proper dynamics, reduce jerking, and minimize the risk of further damage to cooperating components in the fuel system.

Fault Diagnostics and Technical Support

Problems with injector nozzles in diesel engines often manifest as difficult starting, increased fuel consumption, smoking, or uneven engine operation. If you want to better understand when injector replacement is necessary and how to recognize the first signs of wear, check out the article: Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails. This provides practical knowledge for planning your injection system repair.

Other Audi Injector Nozzles

If you are looking for other Audi injector nozzles for different engine versions or models of this brand, check out our dedicated offer: Audi injector nozzles. This will allow you to easily compare available variants and select the part suitable for your specific engine number and vehicle generation.