VW Passat CC Touareg 7L Fuel Injection Valve Injector 3.6 FSI BWS 03H906036A

VW Passat CC Touareg 7L Fuel Injection Valve Injector 3.6 FSI BWS is an original fuel system component from the Injector Nozzles group, designed for 3.6 FSI petrol engines. It enables precise fuel metering, which translates into stable engine operation, proper idle quality, and predictable throttle response.

Specifications and technical data

• SKU: 03H906036A
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 03H906036A
• Substitutable numbers: 03H906036A, 03H 906 036 A, 03H 906 036 AB, 03H906036AB
• Part type: Fuel Injector
• Category: Fuel Injectors

Purpose and function of the injector

The presented fuel injector is dedicated to FSI direct injection petrol engines used in Volkswagen Passat CC and Touareg 7L models with the 3.6 BWS unit. Its task is to atomize fuel at the appropriate pressure directly into the combustion chamber, while maintaining the correct spray pattern and opening time, which is crucial for performance, fuel consumption, and exhaust emissions. A properly selected injector nozzle allows for maintaining even operation of all cylinders, reducing jerking during acceleration, and minimizing the risk of engine control unit errors related to the air-fuel mixture.

Benefits of using an original Volkswagen component

Using an original Volkswagen injector ensures full compatibility with the factory parameters of the 3.6 FSI BWS unit. The component has been designed for specific flow characteristics, response time, and resistance to the temperature and pressure present in this engine, which facilitates maintaining stable injection maps and correct operation of the control unit. In practice, this means, among other things:

• more predictable engine behavior across the entire rev range,
• easier cold and warm engine starts,
• reduced risk of uneven idling,
• better cooperation with the factory diagnostic system and emission control systems.

Characteristics of the used component

The offered injector comes from dismantling and has the status of a used original component. This type of part is an attractive cost alternative to a new OEM component, while maintaining the correct structural fit for the 3.6 FSI BWS engine. This type of injector is frequently chosen by workshops specializing in the service of FSI units and by informed users looking for factory solutions at a reasonable price. Thanks to the preservation of the original spray geometry and operating parameters, the installation of a used injector is particularly beneficial in situations where a single element in a set is being replaced, while the remaining injectors in the engine remain factory-fitted.

Selection by part numbers and installation compatibility

The injector should be selected based on the OEM part number and related interchangeable numbers, which helps avoid compatibility issues in specific versions of the 3.6 FSI BWS engine. Proper selection guarantees correct seating in the cylinder head, tightness of connections, and proper cooperation with the fuel rail and the vehicle's electrical system. In case of doubt, it is useful to compare the markings from the dismantled component or consult a mechanic who knows the specifics of the FSI units used in the Volkswagen Passat CC and Touareg 7L.

Related elements from the Injector Nozzles category

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other elements from the same group, such as additional injectors, fuel rails, or injector seals, check the available parts in the Volkswagen Injector Nozzles category.

Technical support and educational materials

When diagnosing problems with the injection system, it is worth knowing the typical symptoms of improper injector operation, methods of their verification, and the possible consequences of neglect. Practical information on symptoms, effects, and diagnostic methods can be found in the article Diesel injector faults – how to recognize them and what are the risks of neglecting them, which helps to better understand the role of injectors in modern power units. If you want to expand your knowledge on safely purchasing items from the Injector Nozzles category in a used version in an online store, you will find practical step-by-step tips in the guide Safe purchase of used car parts online – a step-by-step guide, prepared for drivers and workshops.