3975042
Injector Fuel Supply Tube
Cummins®

Introduction

The Cummins Injector Fuel Supply Tube, identified by part number 3975042, is a critical component in the fuel system of heavy-duty trucks. Manufactured by Cummins Inc., a leader in the automotive and diesel engine industry, this part ensures efficient fuel delivery from the tank to the injectors. Its design and functionality are tailored to meet the demanding requirements of heavy-duty applications, contributing to the overall performance and reliability of Cummins engines.

Function and Operation

The Injector Fuel Supply Tube operates as a conduit within the fuel system, facilitating the transfer of fuel from the tank to the injectors. It plays a role in maintaining consistent fuel pressure and flow, which is vital for the precise operation of fuel injectors. The tube is engineered to withstand the high pressures and temperatures inherent in diesel fuel systems, ensuring a stable and uninterrupted fuel supply to the engine.

Key Features

The Cummins Injector Fuel Supply Tube is characterized by its robust design and construction. It is made from high-quality materials that offer durability and resistance to corrosion and wear. The tube’s precise engineering ensures a secure fit within the fuel system, minimizing the risk of leaks and maintaining fuel integrity. Additionally, its design incorporates features that enhance fuel flow efficiency and contribute to the overall performance of the fuel system.

Benefits

The use of the Cummins Injector Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent and reliable fuel supply to the injectors. This consistent fuel delivery enhances engine performance, allowing for more efficient combustion and power output. Furthermore, the tube’s robust construction and design ensure reliability under demanding operating conditions, supporting the longevity and performance of Cummins engines.

Installation and Compatibility

Proper installation of the Injector Fuel Supply Tube is crucial for its effective operation. It is designed to be compatible with various Cummins engine models, ensuring a seamless integration into the fuel system. Installation guidelines recommend following manufacturer specifications to ensure a secure and proper fit. Specific requirements may include torque specifications for fittings and verification of system integrity post-installation.

Maintenance and Troubleshooting

To ensure optimal performance of the Injector Fuel Supply Tube, regular maintenance is recommended. This includes periodic inspection for signs of wear, corrosion, or leaks. Cleaning the tube and its connections as part of routine maintenance can prevent buildup and ensure smooth fuel flow. Troubleshooting common issues may involve checking for proper installation, verifying fuel pressure, and inspecting for any damage or obstructions within the fuel system.

Safety Considerations

When working with the Injector Fuel Supply Tube, it is important to adhere to safety precautions. This includes ensuring the engine is off and the fuel system is depressurized before beginning any work. Proper handling procedures should be followed to avoid fuel spills and exposure to high-pressure fuel. Awareness of potential hazards, such as fuel ignition sources, is crucial to maintain a safe working environment.

Cummins 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 innovation, quality, and reliability in the automotive and industrial sectors. The company’s commitment to manufacturing high-quality components is evident in its extensive range of products, designed to meet the rigorous demands of various applications.¹

Compatibility with Specific Engine Models

The Cummins Injector Fuel Supply Tube, part number 3975042, is compatible with several Cummins engine models, including:

• ISC CM2150 and ISL9 CM2150 SN
• ISC CM850 and QSL8.9 CM2150 L141
• QSC8.3 CM850 (CM2850) and QSL9 CM850 (CM2850)

This part ensures a reliable and efficient fuel supply to the injectors, which is essential for optimal engine performance.²

Role of Injector Fuel Supply Tube in Engine Systems

The Injector Fuel Supply Tube, identified by part number 3975042, is an integral component in the fuel delivery system of an engine. It is responsible for channeling pressurized fuel from the fuel rail to the individual fuel injectors. This part ensures a consistent and reliable fuel supply, which is essential for the injectors to operate efficiently.

In the context of injector plumbing, the Injector Fuel Supply Tube connects to the fuel rail on one end and to the fuel injector on the other. This connection is vital for maintaining the integrity of the fuel system, ensuring that fuel is delivered under the correct pressure and at the right temperature. The tube’s design allows it to withstand the high pressures and temperatures within the fuel system, contributing to the overall performance and reliability of the engine.

When considering the performance aspect, the Injector Fuel Supply Tube plays a significant role. It must be precisely engineered to handle the specific fuel flow rates and pressures required by the engine. Any restriction or leak in the tube can lead to inconsistent fuel delivery, affecting engine performance, fuel efficiency, and emissions.

In terms of plumbing, the Injector Fuel Supply Tube is often part of a larger network that includes fuel lines, filters, and regulators. Its proper installation and maintenance are essential to prevent fuel leaks, which can be hazardous, and to ensure that the fuel system operates within its designed parameters.

Finally, the interaction between the Injector Fuel Supply Tube and the injectors themselves is noteworthy. The tube must provide a secure and leak-free connection to each injector, ensuring that fuel is delivered precisely when and where it is needed. This precise delivery is fundamental to the injector’s ability to atomize fuel effectively, which is a key factor in combustion efficiency and engine performance.

Conclusion

The Cummins Injector Fuel Supply Tube (part number 3975042) is a vital component in the fuel delivery system of Cummins engines. Its robust design, compatibility with various engine models, and role in ensuring consistent fuel delivery contribute to the overall performance, reliability, and efficiency of Cummins engines. Regular maintenance and proper installation are essential to maximize the benefits of this part.