Audi A4 B7 Petrol Fuel Pump Tank Sender Pump Unit 8E0919051CJ

Audi A4 B7 Petrol Fuel Pump Tank Sender Pump Unit is an original fuel system component designed for petrol engines, ensuring stable fuel delivery to the fuel rail. Thanks to the factory Audi design and adherence to OEM specifications, this pump is perfectly matched to the fuel system, allowing for the restoration of proper engine performance. This is the ideal solution for users who expect consistency with the factory design and want to avoid compatibility issues.

Specifications and technical data

• SKU: 8E0919051CJ
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0919051CJ
• Substitutable numbers: 8E0919051CJ, 8E0 919 051 CJ
• Fuel type: Petrol
• Category: Fuel Pumps & Sending Units

Purpose and role in the fuel system

The fuel pump in the Audi A4 B7 is responsible for maintaining the correct pressure and flow rate of petrol from the tank to the engine. A properly functioning component in this group is crucial for:

• stable idling,
• proper acceleration without jerking,
• maintaining the correct air-fuel mixture,
• reducing the risk of air entering the fuel system.

Using a component that complies with the manufacturer's design allows for maintaining the operating parameters intended for the petrol engine and reduces the risk of diagnostic errors related to incorrect fuel pressure.

Construction and fitment for Audi

The fuel pump in this offer belongs to the Fuel pumps and level sensors group, meaning it is an element integrated with the fuel tank system and works with the factory Audi electrical installation. Using the original Audi brand promotes:

• proper fitment with the basket and mounts in the tank,
• compatibility with the stock wiring harness,
• preservation of the flow parameters specified by the manufacturer.

As a result, installation is straightforward, without the need for modifications to the wiring or the use of additional adapters.

Operating characteristics in a petrol engine

The component has been designed to work with the petrol engine fuel system, where precise maintenance of fuel pressure is required across a wide range of loads. In practice, this means:

• efficient engine starting when cold and warm,
• stable fuel supply at higher RPMs,
• reduced risk of power drops resulting from insufficient fuel flow.

Selecting a pump dedicated to a specific engine version limits the risk of improper engine control unit operation and the appearance of errors related to the mixture or fuel pressure.

Condition, verification, and service application

The offered fuel pump is a used item, making it an attractive option for service repairs where the priority is reasonable cost while maintaining the original design. This type of component is particularly useful in situations where:

• the existing pump has worn out or suffered mechanical damage,
• there are issues with starting or power drops related to fuel supply,
• a quick replacement is necessary as part of routine maintenance.

Before installation, it is recommended to perform a standard check of the fuel system (line tightness, filter condition, electrical supply) so that the new component can operate under proper conditions.

Selection support and additional resources

For components in the fuel system and control electronics group, matching by manufacturer part numbers and technical parameters is particularly important. To better understand the principles of selecting used components, their compatibility, and best installation practices, it is worth reading the guide: Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?

If you are planning a comprehensive repair or upgrade of the fuel supply area in your Audi and need other elements from the same group, such as pump modules, assemblies integrated with level sensors, or additional pump inserts, check the available parts in the Audi fuel pumps and level sensors category.