Audi RS3 8V RSQ3 F3 TTRS FV Fuel Injector Nozzle Jet 2.5 TFSI 07K133551B

Audi RS3 8V RSQ3 F3 TTRS FV Fuel Injector Nozzle Jet 2.5 TFSI is an original fuel system component designed for high-performance 2.5 TFSI engines in Audi sports models. Its precise fuel spray characteristics and perfect fit for the specific requirements of five-cylinder engines make it a key component for stable engine operation. Thanks to its OEM design, the injector ensures consistency with factory engine control unit calibration and maintains stock performance levels.

Specifications and technical data

• SKU: 07K133551B
• Mark: Audi
• Condition: Used
• OEM Part Number: 07K133551B
• Substitutable numbers: 07K133551B, 07K 133 551 B
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and role of the injector in the 2.5 TFSI engine

The presented item belongs to the Fuel Injector Nozzle Jet category and is responsible for precise fuel dosing in a direct-injection engine. In 2.5 TFSI units used in Audi RS3, RSQ3, and TTRS models, proper injector operation has a direct impact on:

• fuel system pressure stability under high load,
• correct mixture formation in the combustion chamber,
• maintaining stock power and torque,
• exhaust emissions control and fuel consumption.

Selecting the correct injector for a specific engine version is particularly important in high-performance vehicles, where the fuel system's operating tolerance margin is limited.

Benefits of using an original Audi injector

The original Audi injector has been designed to work seamlessly with the factory engine control unit and ignition system. Using this component allows you to maintain:

• consistency of injection characteristics with the injection maps stored in the ECU,
• proper idle operation and smooth performance during rapid acceleration,
• appropriate engine refinement at high RPMs,
• trouble-free integration with the existing fuel system.

In the case of direct-injection gasoline engines, using a component with incorrect parameters can result in rough idling, power loss, or ECU error codes. The original component minimizes such risks.

Technical and fuel characteristics

The injector operates in a gasoline-powered system, meaning its design is adapted to high injection pressure and the specific combustion requirements of TFSI engines. The component is prepared to work with the factory high-pressure fuel pump and fuel rail, ensuring:

• stable opening and closing of the injection valve across the full RPM range,
• the correct fuel spray pattern for the 2.5 TFSI combustion chamber,
• the ability to operate under high-temperature and thermal load conditions.

This type of solution is particularly important in performance-oriented units, where the fuel system operates under a wide range of loads and requires repeatability of injection parameters.

Condition of the item and service application

The offered injector is a used part, which allows for an economical repair of the fuel system while maintaining the manufacturer's original specifications. This type of part is suitable both for replacing a single damaged injector and for broader service work involving multiple cylinders.

In case of fuel system issues – such as rough engine operation, increased fuel consumption, or starting difficulties – it is worth checking the injector diagnostic principles described in our blog article on injector failures and the consequences of neglecting them, and then selecting the appropriate replacement part consistent with the requirements of the 2.5 TFSI unit.

Expanding the Audi fuel system – Fuel Injector Nozzle Jets

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other items from the same group, such as additional injectors, fuel rails, or fuel supply components, check out the available parts in the Audi Fuel Injector Nozzle Jets category.