3973800
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3973800 Fuel Supply Tube is a critical component in heavy-duty truck fuel systems, designed to ensure a consistent and reliable fuel supply from the tank to the engine. This part plays a significant role in the overall performance and efficiency of the vehicle.

Function and Operation

The Fuel Supply Tube operates as a conduit within the fuel system, delivering fuel from the tank to the engine. It works in conjunction with other fuel system components to maintain optimal fuel pressure and flow, which are essential for engine performance ².

Key Features

The design of the Cummins 3973800 incorporates durable materials resistant to fuel corrosion, ensuring longevity and reliability. It features precise fittings and connections for easy installation and secure attachment. Reinforced sections may be included to withstand the pressures and vibrations of heavy-duty applications.

Benefits

This Cummins part offers several advantages, including improved fuel efficiency and engine performance. Its durable construction reduces the likelihood of leaks or failures, and the consistent fuel supply it provides helps maintain engine reliability under various operating conditions.

Installation and Compatibility

Proper installation of the Fuel Supply Tube is essential for its effective operation. Installation guidelines typically include specific tools and procedures to ensure secure and leak-free connections. Compatibility with various Cummins engine models should be verified by consulting the manufacturer’s specifications ¹.

Maintenance and Troubleshooting

Regular maintenance of the Fuel Supply Tube is important for optimal performance. This includes periodic inspection for wear, corrosion, or damage. Troubleshooting techniques for issues such as leaks or blockages may involve checking connections, cleaning or replacing filters, and ensuring the tube is free from obstructions ².

Safety Considerations

When working with the Fuel Supply Tube, it is important to observe safety precautions. This includes proper handling procedures to avoid fuel spills or exposure to harmful vapors. Awareness of the flammability of fuel and the risks associated with high-pressure systems is crucial for safe operation and maintenance.

Cummins Overview

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its high-quality engine and component offerings. The company’s product portfolio includes a wide range of engines and components designed for various applications, including heavy-duty trucks, where the Cummins 3973800 plays a role in ensuring optimal fuel delivery and engine performance.

Compatibility

The Cummins Fuel Supply Tube part number 3973800 is designed to fit a variety of engines, ensuring efficient fuel delivery and system integrity. It is compatible with the QSC8.3 CM850 (CM2850) and QSC9 CM2250/QSL9 CM2250 engines, the QSL8.9 CM2150 L141 engine, the QSL9 CM2250 and QSL9 CM2350 L102 engines, and the QSL9 CM850 (CM2850) engine. This versatility ensures that the engine operates efficiently and reliably across different models.

Role in Engine Systems

The Fuel Supply Tube is an integral component in the fuel delivery system of an engine, ensuring a consistent and reliable supply of fuel to the combustion chambers. It interfaces with the engine’s fuel plumbing system and supports the operation of the Engine Control Module (ECM) by ensuring a stable fuel flow, which is essential for maintaining precise control over the fuel-air mixture and optimizing combustion efficiency ³.

Conclusion

The Cummins 3973800 Fuel Supply Tube is a vital component in the fuel system of heavy-duty trucks, ensuring a reliable and consistent fuel supply to the engine. Its durable construction, precise fittings, and compatibility with various Cummins engine models make it an essential part for maintaining engine performance and efficiency. Regular maintenance and proper installation are key to ensuring the longevity and reliability of this part.