Audi A3 8P A4 B7 A4 S Line A6 C6 Injector Camshaft Rocker Arm Shaft 03G109527B

Audi A3 8P A4 B7 A4 S Line A6 C6 Injector Camshaft Rocker Arm Shaft is an original component from the Rocker arms and parts group, designed for precise operation with the unit injector system in Audi engines. This used OEM part ensures factory-standard geometry, correct operating characteristics, and predictable performance of the timing and fuel supply systems. It is the ideal solution for users who want to maintain compliance with the manufacturer's design and avoid issues resulting from the use of aftermarket replacements with uncertain parameters.

Specifications and technical data

• SKU: 03G109527B
• Mark: Audi
• Condition: Used
• OEM Part Number: 03G109527B
• Substitutable numbers: 03G109527B, 03G 109 527 B
• Part type: Rocker Arm
• Category: Rocker Arms & Parts

Purpose and role in the engine system

The injector camshaft rocker arm shaft is responsible for transferring motion from the timing system to the unit injectors, which directly affects fuel metering. In Audi A3 8P, A4 B7 (including S Line versions), and A6 C6 models, this component works with the cylinder head, rocker arms, and unit injectors to create a cohesive, precise injection control system. A correctly selected shaft helps maintain stable engine operation, even load distribution on mating components, and proper engine refinement.

Benefits of using an original Audi component

The original shaft from the Rocker arms and parts group is designed for specific Audi engines, which translates into:

• precise fitment with the cylinder head and injector rocker arms,
• maintenance of factory clearances and system operating characteristics,
• consistent cooperation with other timing and fuel supply components,
• reduced risk of premature wear of the unit injectors. As a result, installation is predictable, and after replacement, it is easier to achieve stable engine operating parameters without the need for additional modifications.

Condition, verification, and selection of parts

The item is offered as a used OEM component, which allows you to combine factory-grade construction with a more favorable purchase cost compared to a new part. Before installation, a standard workshop inspection is recommended to check for wear on working surfaces, compatibility with existing rocker arms, and compliance with the specific engine version in your Audi. To avoid incorrect selection, it is worth verifying the part's compatibility with the vehicle's documentation, engine codes, and equipment configuration. Catalog information and comparing the design with the currently installed component can also be helpful.

Support in searching for rare components

If you are looking for less common components for the fuel supply or timing systems in older Audi generations, practical tips regarding working with catalog numbers, equipment versions, and differences between engine variants may be useful. This topic is discussed in more detail in the article on effectively searching for rare, used car parts online, which helps reduce the risk of purchasing an incompatible part.

Expanding the scope of service work

If you are planning a comprehensive repair or upgrade of your Audi's engine area and need other components from the same group, such as additional shafts, levers, or mating tappets, check out the available parts in the Audi rocker arms and parts category.