Audi RS4 B8 RSQ3 8U TTRS 8J Cam Follower Engine Fuel Pump Tappet 07L109311

Audi RS4 B8 RSQ3 8U TTRS 8J Cam Follower Engine Fuel Pump Tappet is a specialized component from the Fuel pumps and level sensors category, designed for use in gasoline engine fuel supply systems. It enables stable transmission of movement to the high-pressure fuel pump, which translates into uniform fuel delivery and proper operation of the engine unit. This solution is dedicated to users who expect precise fuel system performance while maintaining favorable maintenance costs.

Specifications and technical data

• SKU: 07L109311
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 07L109311
• Substitutable numbers: 07L109311, 07L 109 311
• Fuel type: Petrol
• Part type: Fuel Pump
• Category: Fuel Pumps & Sending Units

Purpose and function in the fuel supply system

The fuel pump tappet in this model is responsible for mechanically controlling the pump's operation, ensuring the correct pressure in the gasoline engine's fuel supply system. The component works with the drive cam, and its task is to provide repeatable, controlled movement transmission, which has a direct impact on fuel delivery stability and engine smoothness. Thanks to a design adapted to the requirements of high-output units, such as those used in RS and TTRS models, the tappet is prepared for operation under increased mechanical and thermal loads. The appropriate geometry of the working surfaces reduces the risk of excessive wear on the pump and mating components.

Compatibility and technical parameters

The presented tappet has been designed to work with gasoline-based fuel supply systems, where high stroke repeatability and operational stability across a wide RPM range are required. Using a dedicated solution instead of universal replacements allows for maintaining the factory fuel pump performance characteristics and reduces the risk of fuel delivery issues. The component belongs to the Fuel pumps and level sensors group, meaning it is part of a key assembly responsible for delivering fuel to the engine. Proper selection of the tappet in relation to the pump and engine unit used is essential for the durability of the entire fuel system and the correct operation of the engine management system.

Product characteristics and practical application

This type of fuel pump tappet is particularly important in vehicles with a sporty character, where the fuel system operates under higher loads than in standard units. Stable operation of the component translates into:

• more predictable fuel pressure in the rail,
• reduced risk of power drops during dynamic acceleration,
• limited risk of uneven engine operation resulting from unstable fuel delivery. Choosing a dedicated tappet is especially important when servicing or upgrading the fuel system, when the goal is to maintain parameters close to factory specifications and reduce the risk of high-pressure fuel pump damage.

Condition, origin, and benefits of use

The offered component comes from the used parts segment, which allows for reducing the cost of repair or modernization of the fuel system while maintaining adequate functionality. For many users, this is a reasonable compromise between price and quality, especially in the case of specialized components used in higher-output units. Before installation, a standard inspection of the working surfaces and the correctness of the interface with the fuel pump and drive elements is recommended. A properly selected and installed tappet can significantly extend the life of the pump and reduce the risk of costly failures related to the gasoline fuel system.

Technical support and additional materials

If you are planning a comprehensive repair or upgrade of the fuel system area in your BMW and need other components from the same group, such as pumps, fuel modules, or fuel level sensors, check the available parts in the BMW Fuel pumps and level sensors category. When selecting fuel system components from the secondary market, it is worth paying attention to the usage history and the type of pump used. Practical tips on the safe selection of dismantled components can be found in the article Fuel delivery problems – what to look for when buying a used injection pump and fuel rails, which discusses key aspects of assessing the technical condition of such assemblies. If you want to maximize the potential of used parts and ensure their longer service life in the vehicle, the guide How to extend the life of used car parts, containing practical tips on the operation and maintenance of dismantled components, may be helpful.