Audi A3 8P A4 B8 Fuel Injector Nozzle 1.8 TFSI CDH 06H906036F

Audi A3 8P A4 B8 Fuel Injector Nozzle 1.8 TFSI CDH is an original component from the Fuel Injector Nozzles group, designed for precise fuel delivery in TFSI petrol engines. The OEM design ensures proper spray parameters, stable engine operation, and correct compatibility with the factory engine control unit.

Specifications and technical data

• SKU: 06H906036F
• Mark: Audi
• Condition: Used
• OEM Part Number: 06H906036F
• Substitutable numbers: 06H906036F, 06H 906 036 F
• Category: Fuel Injectors

Purpose and function of the fuel injector

The presented fuel injector is a component of the 1.8 TFSI engine fuel system, responsible for the precise dosing of petrol directly into the combustion chamber. A properly selected injector nozzle allows for maintaining stable rail pressure, the correct fuel spray pattern, and even operation of all cylinders, which translates into engine refinement, performance, and fuel economy.

Original manufacturing for the Audi brand ensures the preservation of factory flow parameters, opening times, and spray characteristics, which is crucial when working with turbocharging and direct injection in TFSI units.

Benefits of using an original injector nozzle

Using a factory injector instead of a worn or faulty component allows for restoring the proper operation of the fuel system. In practice, this means:

• smoother engine idle,
• better throttle response across the entire rev range,
• more stable fuel trim values in the ECU,
• reduced risk of combustion chamber overheating resulting from improper fuel spray.

Thanks to maintaining OEM specifications, the injector works with the factory ECU software without the need for additional fuel map adaptation. This is a particularly beneficial solution when servicing TFSI units, where the accuracy of fuel dosing has a direct impact on the durability of the engine and its accessories.

Component condition and installation aspects

The offered fuel injector is a used component, which allows for an economical repair of the fuel system while maintaining original build quality. Before installation, a standard service procedure is recommended: checking the cylinder head seats, seals, and the cleanliness of fuel lines to ensure tightness and proper seating of the nozzle.

Replacing an injector in a 1.8 TFSI engine requires maintaining proper cleanliness in the fuel rail area and using the correct tightening torque for mounting elements. After installation, it is advisable to perform computer diagnostics to verify injection corrections and, if necessary, perform injector adaptation in the ECU.

Diagnostics and fuel system maintenance

A malfunctioning injector nozzle can cause starting difficulties, jerking during acceleration, increased fuel consumption, or rough running on a cold engine. To better understand the symptoms and consequences of injector failures and the importance of a quick service response, it is worth reading our guide: injector failures – symptoms, consequences, and diagnostics.

Matching by part numbers and online shopping

Selecting the correct injector for a specific engine version should always be based on the OEM part number and interchangeable numbers. This helps avoid compatibility issues, installation errors, and improper engine operation. When shopping online, it is particularly important to compare markings with vehicle documentation or the existing component.

If you want to streamline the process of verifying component compatibility by part numbers and reduce the risk of errors when ordering online, our practical guide will be helpful: how to safely verify parts by OEM numbers when shopping online.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other components from the same group, such as additional injectors, fuel rails, or fuel dosing control elements, check out the available parts in the Audi Fuel Injector Nozzles category.