3944906
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3944906 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks. It ensures a steady and reliable supply of fuel from the tank to the engine, maintaining consistent fuel flow and pressure under various operating conditions.

Purpose and Function

This Cummins part facilitates the transfer of fuel from the tank to the engine, ensuring that the engine receives the necessary fuel to operate efficiently, regardless of the truck’s load or speed. It is engineered to withstand the pressures and temperatures associated with fuel delivery in heavy-duty applications ¹.

Key Features

The 3944906 Fuel Supply Tube is constructed from durable materials that are resistant to corrosion and wear, ensuring longevity and reliable performance. Its design includes features that enhance fuel flow efficiency and reduce the risk of leaks. The tube is also engineered to accommodate the specific requirements of Cummins engines, providing a secure and efficient connection between the fuel tank and the engine’s fuel system ².

Benefits

Using the Cummins 3944906 Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent fuel supply to the engine. Its durable construction and reliable performance enhance the overall reliability of the fuel system. Additionally, the tube’s design and materials contribute to its longevity, reducing the need for frequent replacements ³.

Installation and Compatibility

Proper installation of the 3944906 Fuel Supply Tube is essential for ensuring optimal performance and safety. Installation guidelines should be followed to ensure a secure and leak-free connection. The tube is compatible with various Cummins engine models, designed to meet the specific fuel delivery requirements of these engines.

Maintenance and Troubleshooting

Regular maintenance of the Fuel Supply Tube is important for ensuring optimal performance and longevity. This includes regular inspections for signs of wear or damage, cleaning as necessary, and addressing any issues promptly to prevent further damage or failure. Common issues may include leaks or blockages, which can often be resolved through cleaning or replacement of affected components.

Safety Considerations

When working with the Cummins 3944906 Fuel Supply Tube, it is important to follow safety practices to ensure personal safety and the safe operation of the vehicle. This includes handling fuel safely, recognizing signs of wear or damage on the tube, and following proper procedures for replacement or repair. Always ensure the engine is off and the fuel system is depressurized before performing any maintenance or repairs.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the automotive and heavy-duty truck industry. The company’s product range includes engines, powertrains, and related components, designed to meet the demanding requirements of various applications.

Role of Part 3944906 Fuel Supply Tube in Engine Systems

The 3944906 Fuel Supply Tube is an essential component in the fuel delivery system of various engine setups. It is responsible for transporting fuel from the fuel tank to the engine’s fuel injection system or carburetor.

Integration with Plumbing

In the context of engine plumbing, the Fuel Supply Tube interfaces with the fuel lines that run throughout the vehicle. It ensures a consistent and reliable flow of fuel, minimizing the risk of fuel starvation or leaks. The tube is often connected to the fuel pump on one end and the fuel filter or fuel rail on the other, forming a critical link in the fuel delivery chain. Proper installation and maintenance of the Fuel Supply Tube are vital to prevent fuel system issues such as blockages or pressure drops.

Interaction with Fuel Filter

The Fuel Supply Tube also plays a significant role when paired with the fuel filter. As fuel travels from the tank through the tube, it passes through the fuel filter, which removes impurities and contaminants. The tube must be correctly sized and fitted to ensure that fuel flow is not restricted, allowing the filter to operate efficiently. Any obstruction or damage to the tube can lead to reduced fuel filter performance, potentially causing engine misfires or decreased fuel efficiency.

Conclusion

The Cummins 3944906 Fuel Supply Tube is a key element in the fuel delivery system, ensuring that fuel is transported efficiently and reliably to the engine components that require it. Its durable construction, reliable performance, and compatibility with various Cummins engine models make it an essential component for maintaining the efficiency and reliability of heavy-duty truck fuel systems.