3944459
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3944459 Fuel Supply Tube is a component designed for use in heavy-duty trucks. It plays a role in the fuel system by ensuring the efficient transfer of fuel from the tank to the engine. This part is integral to maintaining the performance and reliability of the vehicle, contributing to the overall efficiency and operational capability of heavy-duty trucks.

Purpose and Function

The Cummins 3944459 facilitates the transfer of fuel from the tank to the engine within the truck’s fuel system. It ensures a consistent and reliable flow of fuel, which is necessary for the engine to operate efficiently. By maintaining a steady supply of fuel, the tube helps in optimizing the engine’s performance and ensuring that the truck can meet its operational demands.

Key Features

The Cummins 3944459 is characterized by several key features that enhance its performance and durability. It is constructed from high-quality materials that are resistant to corrosion and wear, ensuring longevity and reliability. The design of the tube includes precise engineering to facilitate efficient fuel flow and compatibility with specific engine models. Additionally, it incorporates features that enhance its durability under the demanding conditions typical of heavy-duty truck operations.

Benefits

The Cummins 3944459 offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent and reliable fuel supply to the engine. Its robust construction and design enhance the reliability of the fuel system, reducing the likelihood of fuel-related issues. Furthermore, its compatibility with specific engine models ensures that it can be seamlessly integrated into the truck’s fuel system, providing optimal performance.

Installation and Compatibility

Proper installation of the Cummins 3944459 is crucial for ensuring its effective operation. Installation procedures should follow manufacturer guidelines to ensure compatibility and performance. This part is designed to be compatible with specific truck models and engine types, ensuring that it can be effectively utilized in a variety of heavy-duty truck applications.

Maintenance and Troubleshooting

Routine maintenance of the Cummins 3944459 is important for ensuring optimal performance. Regular inspections for signs of wear or damage can help in identifying potential issues before they become critical. Common issues may include fuel leaks or blockages, which can be addressed through proper troubleshooting steps such as cleaning or replacing the tube if necessary.

Safety Considerations

When handling and working with the Cummins 3944459, it is important to observe safety practices to prevent fuel leaks and ensure safe operation. This includes ensuring that the tube is properly installed and secured, and that any maintenance or repairs are conducted in a well-ventilated area away from ignition sources.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel engines and components. With a history of innovation and quality, Cummins has established a strong reputation in the automotive industry, particularly in the manufacture of diesel engines and components for heavy-duty trucks. The company’s commitment to quality and performance is reflected in its product range, which includes the Cummins 3944459.¹

Cummins Engine Compatibility with Fuel Supply Tube Part 3944459

The Cummins Fuel Supply Tube part number 3944459 is a component in the fuel delivery system of certain Cummins engines. This part is designed to ensure efficient and reliable fuel flow from the fuel tank to the engine, maintaining optimal performance and fuel efficiency.

ISB CM550

The ISB CM550 engine is a robust and versatile power unit, often used in various applications such as construction equipment, agricultural machinery, and industrial settings. The Fuel Supply Tube part 3944459 fits seamlessly into the ISB CM550’s fuel system, providing a secure and leak-free connection that is essential for the engine’s operation.

QSB5.9 44 CM550

The QSB5.9 44 CM550 engine is another high-performance model in the Cummins lineup, known for its durability and efficiency. This engine is commonly used in heavy-duty applications, including marine and industrial uses. The Fuel Supply Tube part 3944459 is engineered to integrate perfectly with the QSB5.9 44 CM550, ensuring that the fuel delivery system operates smoothly and reliably.

Both the ISB CM550 and QSB5.9 44 CM550 engines benefit from the precise engineering of the Fuel Supply Tube part 3944459, which is designed to withstand the rigors of demanding environments while maintaining the integrity of the fuel system. This part is a testament to Cummins’ commitment to quality and performance, ensuring that these engines can deliver consistent power and efficiency.

Role of Part 3944459 Fuel Supply Tube in Engine Systems

The Fuel Supply Tube (part 3944459) is an integral component in the fuel delivery system of an engine, ensuring a consistent and reliable flow of fuel from the fuel tank to the engine’s fuel injectors or carburetor. This component interfaces with several key systems and parts to maintain efficient engine performance.

Integration with Plumbing Systems

In the context of engine plumbing, the Fuel Supply Tube connects to the fuel lines that run from the fuel tank to the engine compartment. It is designed to withstand the pressure and temperature variations within the fuel system, ensuring a secure and leak-free connection. The tube’s precise fitting into the plumbing system allows for the smooth transit of fuel, minimizing the risk of blockages or restrictions that could impede fuel flow.

Interaction with the Fuel Filter

The Fuel Supply Tube also plays a significant role in conjunction with the fuel filter. Positioned upstream of the fuel filter, the tube delivers fuel from the tank to the filter, where contaminants and impurities are removed. This clean fuel is then directed towards the engine’s fuel injectors or carburetor. The consistent flow provided by the Fuel Supply Tube ensures that the fuel filter operates efficiently, catching debris without causing undue strain on the system.

Ensuring System Integrity

By maintaining a steady fuel supply, the Fuel Supply Tube contributes to the overall integrity of the fuel delivery system. Its reliable performance helps prevent issues such as fuel starvation, which can lead to engine misfires or stalling. Additionally, the tube’s durable construction ensures longevity and reduces the frequency of maintenance required for the fuel system.

Conclusion

In summary, the Fuel Supply Tube (part 3944459) is a vital link in the chain of components that deliver fuel to the engine, working seamlessly with the plumbing system and fuel filter to ensure optimal engine function. Its role in maintaining a consistent and reliable fuel supply is crucial for the efficient operation of heavy-duty trucks and other applications where Cummins engines are utilized.