4933420
Fuel Supply Tube
Cummins®

Introduction

The Cummins 4933420 Fuel Supply Tube is a component designed for use in the fuel systems of heavy-duty trucks. Its purpose is to facilitate the efficient and reliable transfer of fuel from the tank to the engine. This tube is integral to maintaining the performance and efficiency of the vehicle’s fuel system ¹.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit within the fuel system responsible for transporting fuel from the storage tank to the engine. It ensures that fuel is delivered under the correct pressure and in the right quantity to support combustion. The proper functioning of a fuel supply tube is vital for the overall efficiency and reliability of the engine, as it directly impacts fuel delivery and, consequently, engine performance ².

Role of the 4933420 Fuel Supply Tube

The Cummins 4933420 Fuel Supply Tube plays a specific role in the operation of a truck by transporting fuel from the tank to the engine. It is designed to withstand the pressures and temperatures associated with fuel transport in heavy-duty applications. This tube ensures that fuel is delivered consistently and efficiently, supporting the engine’s demand for power under various operating conditions ³.

Key Features

The Cummins 4933420 Fuel Supply Tube is constructed from materials that enhance its durability and efficiency. Its design includes elements that ensure it can withstand the rigors of heavy-duty use, such as resistance to corrosion and high-pressure fuel flow. Unique characteristics of this tube may include specific fittings or connections that ensure a secure and leak-free installation within the fuel system ⁴.

Benefits

The Cummins 4933420 Fuel Supply Tube offers several benefits, including improved fuel delivery efficiency and enhanced durability. Its reliable performance under various operating conditions contributes to the overall efficiency and reliability of the truck’s fuel system. The tube’s design and construction ensure it can meet the demands of heavy-duty applications, providing consistent fuel delivery to support engine performance ⁵.

Troubleshooting and Maintenance

Common issues with the Cummins 4933420 Fuel Supply Tube may include leaks, blockages, or damage due to wear and tear. Diagnostic steps for identifying problems can involve checking for visible signs of damage, testing for leaks, and ensuring proper connections within the fuel system. Maintenance practices to ensure optimal performance and longevity include regular inspections for wear, ensuring connections are secure, and replacing the tube if significant damage or degradation is detected ⁶.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a strong reputation in the industry, Cummins is committed to producing high-quality automotive components that meet the demands of various applications, including heavy-duty trucks. The company’s dedication to quality and performance is evident in its wide range of products, including the Cummins 4933420 Fuel Supply Tube ⁷.

Cummins Engine Compatibility with Fuel Supply Tube Part 4933420

The Cummins Fuel Supply Tube part number 4933420 is designed to fit seamlessly within a range of Cummins engine models, ensuring optimal fuel delivery and performance. This part is integral to the engine’s fuel system, facilitating the transfer of fuel from the fuel tank to the engine’s fuel injection system.

ISB CM2150

The ISB CM2150 engine benefits from the precise engineering of the 4933420 Fuel Supply Tube. This part ensures that the fuel supply remains consistent and reliable, which is crucial for maintaining the engine’s performance and efficiency. The fitment is designed to handle the specific demands of the ISB CM2150, providing a secure and durable connection.

QSB4.5 CM850 (CM2850)

For the QSB4.5 CM850 (CM2850) engines, the 4933420 Fuel Supply Tube is engineered to meet the unique requirements of these models. The part’s design allows for efficient fuel flow, which is essential for the engine’s operation. The compatibility ensures that the fuel supply tube integrates smoothly with the engine’s architecture, providing a reliable connection that supports the engine’s performance.

The 4933420 Fuel Supply Tube is a critical component for both the ISB CM2150 and QSB4.5 CM850 (CM2850) engines, ensuring that fuel is delivered efficiently and reliably. This part is designed to fit these engines perfectly, providing a secure and durable connection that supports the engine’s performance and longevity ⁸.

Role of Part 4933420 Fuel Supply Tube in Engine Systems

The 4933420 Fuel Supply Tube is an integral component in the fuel delivery system of various engine setups. It facilitates the seamless transfer of fuel from the fuel tank to the engine’s fuel injection system or carburetor. This tube is designed to withstand the pressures and temperatures associated with fuel transport, ensuring a consistent and reliable fuel supply ⁹.

In the context of fuel systems, the 4933420 tube interfaces with several key components. It connects to the fuel pump, which draws fuel from the tank and pressurizes it for delivery through the tube. The tube then routes the pressurized fuel to the fuel filter, where contaminants are removed to prevent damage to sensitive engine components.

Following filtration, the fuel travels through the 4933420 tube to the fuel injection system or carburetor. In fuel-injected engines, the tube delivers fuel to the fuel rail, which distributes it to individual injectors. Each injector meters the precise amount of fuel required for combustion, enhancing engine performance and efficiency.

In carbureted engines, the 4933420 tube supplies fuel to the carburetor, where it is mixed with air before entering the combustion chamber. This mixture is vital for the engine’s operation, as it directly influences the power output and fuel economy.

Additionally, the 4933420 tube may incorporate features such as fuel pressure regulators or return lines. These components help maintain optimal fuel pressure within the system, ensuring that the engine receives a consistent fuel supply under varying operating conditions.

Overall, the 4933420 Fuel Supply Tube plays a significant role in the efficient and reliable operation of engine fuel systems, interfacing with critical components to deliver fuel precisely where it is needed ¹⁰.

Conclusion

The Cummins 4933420 Fuel Supply Tube is a vital component in the fuel systems of heavy-duty trucks, ensuring efficient and reliable fuel delivery from the tank to the engine. Its robust design and compatibility with various Cummins engine models make it an essential part for maintaining engine performance and efficiency. Regular maintenance and timely replacement of this part are crucial for the longevity and optimal operation of the fuel system.