3979332
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3979332 Fuel Supply Tube is a critical component in the fuel systems of heavy-duty trucks. It ensures the consistent and reliable transfer of fuel from the tank to the engine, supporting optimal engine performance.

Purpose and Function

This part facilitates the delivery of fuel from the tank to the engine, ensuring a consistent fuel flow that is vital for maintaining engine performance. Its design provides a direct and unobstructed pathway for fuel, contributing to efficient combustion and engine efficiency ¹.

Key Features

Constructed from durable, fuel-resistant materials, the Cummins 3979332 Fuel Supply Tube is designed for longevity and reliability. Features such as reinforced connections and a smooth interior minimize resistance to fuel flow, enhancing the tube’s performance under demanding conditions ².

Benefits

The use of this Cummins part offers several advantages, including improved fuel efficiency through a steady fuel supply and reduced risk of fuel leaks. Its robust construction enhances engine reliability and performance ³.

Installation and Compatibility

Proper installation of the Fuel Supply Tube is essential for its effective function. It may require specific tools and procedures to ensure a secure and leak-free connection. Compatibility with various Cummins engine models should be verified for optimal performance.

Maintenance and Troubleshooting

Regular maintenance of the Fuel Supply Tube is important for its longevity and optimal performance. This includes periodic inspections for wear, damage, or leaks. Troubleshooting common issues such as fuel leaks or restricted flow may involve checking connections, cleaning or replacing filters, and ensuring the tube is free from obstructions.

Common Issues and Solutions

Typical problems with the Fuel Supply Tube include clogs or damage due to wear and tear. Solutions may involve cleaning the tube, repairing any damage, or replacing the tube if necessary. Regular maintenance can help prevent many of these issues.

Safety Considerations

When working with the Fuel Supply Tube, it is important to follow safety practices. This includes handling fuel with care to avoid spills and ensuring that the fuel system is properly pressurized before and after any maintenance or replacement procedures.

Cummins Overview

Cummins Inc. is renowned in the heavy-duty truck industry for its commitment to quality and innovation in engine components. With a history of developing reliable and high-performance engine parts, Cummins has established a reputation for excellence in the automotive sector.

Compatibility

The Cummins Fuel Supply Tube part number 3979332 is designed to fit seamlessly with several engine models, including the QSC8.3 CM850 (CM2850), QSL9 CM850 (CM2850), and QSL8.9 CM2150 L141. This part ensures the proper flow of fuel within the engine system, maintaining optimal performance and efficiency.

Role in Engine Systems

This Cummins part is integral to the fuel delivery system, transporting fuel from the tank to the engine’s fuel injectors or carburetor. It connects various sections of the fuel lines, ensuring a seamless transition and maintaining the integrity of the fuel system.

Interaction with Fuel Filter

The Fuel Supply Tube delivers fuel from the tank to the fuel filter, where contaminants are removed before the fuel reaches the engine. It is designed to handle pressure differentials, ensuring smooth and efficient fuel flow through the filter.

Conclusion

The Cummins 3979332 Fuel Supply Tube plays a vital role in the fuel systems of heavy-duty trucks, ensuring efficient and reliable fuel delivery to the engine. Its durable construction, compatibility with various engine models, and integration within the fuel system highlight its importance in maintaining engine performance and reliability.