Audi A3 8V 1.6 TDI CLHA Diesel Fuel Level Sensor Pump Sender Unit 5Q0919050P

Audi A3 8V 1.6 TDI CLHA Diesel Fuel Pump Float is an original part from the Fuel Pumps and Level Sensors group, designed for diesel systems in the Audi A3 8V model with a 1.6 TDI CLHA engine. This solution allows for the restoration of proper diesel fuel supply to the engine and stable fuel level readings, directly impacting driving comfort and safety.

Specifications and technical data

• SKU: 5Q0919050P
• Mark: Audi
• Condition: Used
• OEM Part Number: 5Q0919050P
• Substitutable numbers: 5Q0919050P, 5Q0 919 050 P
• Fuel type: Diesel
• Category: Fuel Pumps & Sending Units

Purpose and Function in the Fuel System

The presented fuel pump and float assembly is dedicated to Audi cars with a Diesel engine, operating with a precise injection system. The component is responsible for both pumping fuel from the tank to the rest of the system and measuring the fuel level via an integrated sensor, which translates to accurate readings on the instrument cluster.

A properly selected pump with a float ensures:

• stable supply pressure across the entire engine operating range,
• reliable engine start-up in low and high temperatures,
• accurate fuel level readings, reducing the risk of sudden vehicle immobilization.

Benefits of Using an Original Audi Part

Using an original Audi component in the diesel fuel supply system allows for maintaining the factory performance parameters of the 1.6 TDI CLHA engine. The design of the pump and float is matched to the fuel tank geometry in the Audi A3 8V, minimizing the risk of air entering the system at low fuel levels and eliminating issues with imprecise readings.

Key advantages include:

• factory fit for the electrical and fuel system,
• maintaining the flow characteristics intended for the 1.6 TDI engine,
• compatibility with the engine control unit software and fuel gauge operating logic.

Condition, Verification, and Installation Aspects

The part is offered in used condition, allowing for optimized repair costs while maintaining original manufacturer specifications. Before installation, a standard visual inspection of the housing, electrical connectors, and fuel outlets is recommended, as well as checking the proper operation of the float within its working range.

When planning a replacement, consider:

• fuel type compatibility with the vehicle's system (diesel engine),
• proper sealing of the fuel tank cap after installation,
• cleanliness of the fuel tank interior to avoid shortening the pump's lifespan.

Selection by Part Numbers and Technical Support

The fuel pump with float has an OEM part number and associated interchangeable numbers, facilitating precise identification and selection for a specific Audi A3 8V version. When selecting, it is advisable to use manufacturer catalog data and the vehicle identification number (VIN) to avoid compatibility issues with the wiring harness and engine control unit.

If you want to better understand how to safely use used components in electronic and measurement systems, the Global Parts guide – Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors? – will be helpful. It discusses topics such as OEM part number selection, compatibility issues, and practical installation tips.

Audi Fuel System Expansion

If you are planning a comprehensive repair or upgrade of the fuel supply system in your Audi and need other parts from the same group, such as additional pumps, level sensors, or power modules, check the available parts in the Audi Fuel Pumps and Level Sensors category.