3973805
Fuel Supply Tube
Cummins®

The Fuel Supply Tube 3973805, manufactured by Cummins, is a component designed for use in the fuel systems of heavy-duty trucks. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this part to ensure efficient and reliable fuel delivery to the engine. This tube is integral to maintaining the performance and efficiency of the truck’s fuel system.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit that transports fuel from the fuel tank to the engine. Its function within the fuel system is to provide a consistent flow of fuel under pressure, ensuring that the engine receives the necessary fuel for combustion. The proper operation of a fuel supply tube is fundamental to the overall performance of a truck’s engine, as it directly influences fuel delivery efficiency and engine reliability ¹.

Purpose of the 3973805 Fuel Supply Tube

This Cummins part plays a role in the fuel delivery system by ensuring a steady and reliable supply of fuel to the engine. It is designed to withstand the pressures and temperatures within the fuel system, providing a durable and efficient pathway for fuel to travel from the tank to the engine. This consistent fuel supply is vital for maintaining engine performance and efficiency.

Key Features

The 3973805 is constructed from materials that offer durability and resistance to the harsh conditions within a truck’s fuel system. Its design includes features that enhance its performance and longevity, such as reinforced sections to withstand pressure and temperature fluctuations. Additionally, the tube may incorporate unique attributes that improve fuel flow and reduce the risk of leaks or blockages.

Benefits

The advantages of using the 3973805 include improved fuel efficiency, as it ensures a consistent fuel supply to the engine. This consistent supply contributes to enhanced engine performance, allowing the truck to operate more efficiently under various conditions. Furthermore, the tube’s durable construction and design features increase its reliability, reducing the likelihood of fuel system failures.

Installation and Compatibility

Proper installation of the Fuel Supply Tube is important for ensuring its effectiveness and durability. Installation procedures may vary depending on the specific engine or fuel system, and it is important to follow manufacturer guidelines to ensure compatibility and proper function. This tube is designed to be compatible with a range of Cummins engines, ensuring a fit for many heavy-duty truck applications.

Maintenance and Troubleshooting

Regular maintenance of the 3973805 is important for ensuring optimal performance and longevity. This may include checking for signs of wear or damage, ensuring connections are secure, and verifying that the tube is free from obstructions. Common issues with fuel supply tubes can include leaks or blockages, and troubleshooting may involve inspecting the tube for damage, ensuring proper installation, and addressing any issues promptly to prevent further complications.

Safety Considerations

When working with the fuel supply system and the 3973805, it is important to observe safety practices and precautions. This includes working in a well-ventilated area, avoiding open flames or sparks near the fuel system, and following proper procedures for handling and disposing of fuel. Additionally, it is important to use the correct tools and equipment for installation and maintenance to prevent damage to the tube or fuel system.

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 quality, innovation, and reliability in the automotive and heavy-duty truck industry. The company’s product range includes engines, powertrains, and related components, all designed to meet the demanding requirements of various applications ².

Cummins Engine Part 3973805: Fuel Supply Tube Compatibility

The Cummins part 3973805, a Fuel Supply Tube, is designed to fit seamlessly into various Cummins engine models. This part is integral for ensuring the proper flow of fuel within the engine’s fuel system, maintaining optimal performance and efficiency.

QSC8.3 CM850 (CM2850) and QSL9 CM850 (CM2850)

The Fuel Supply Tube part 3973805 is compatible with the QSC8.3 CM850 (CM2850) and QSL9 CM850 (CM2850) engines. These engines are part of the Cummins QSC and QSL series, known for their robust design and reliability in various applications. The part ensures that the fuel supply system operates smoothly, contributing to the engine’s overall performance.

QSL8.9 CM2150 L141

The part 3973805 also fits the QSL8.9 CM2150 L141 engine. This engine is part of the Cummins QSL series, which is designed for heavy-duty applications, providing the necessary power and durability for demanding tasks. The Fuel Supply Tube ensures that the fuel delivery system functions correctly, maintaining the engine’s efficiency and reliability.

Compatibility Summary

• QSC8.3 CM850 (CM2850)
• QSL9 CM850 (CM2850)
• QSL8.9 CM2150 L141

These engines benefit from the precise engineering of the Cummins part 3973805, ensuring that the fuel supply system operates without issues, thereby supporting the engine’s performance and longevity.

Role of Part 3973805 Fuel Supply Tube in Engine Systems

The Part 3973805 Fuel Supply Tube is an integral 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. This tube works in conjunction with several other components to ensure a seamless and efficient fuel supply.

Integration with Plumbing

In the context of engine plumbing, the Fuel Supply Tube connects to the fuel lines that run throughout the vehicle. These lines are typically made from durable materials such as steel or high-density plastic to withstand the pressure and corrosive nature of fuel. The tube is secured using clamps or fittings to prevent leaks and ensure a consistent fuel flow. Proper installation and maintenance of these connections are essential for the overall efficiency and reliability of the fuel system.

Interaction with Fuel Filter

The Fuel Supply Tube also plays a significant role when interfacing with the fuel filter. Positioned between the fuel tank and the engine, the fuel filter screens out impurities and contaminants from the fuel before it reaches the engine. The tube delivers fuel to the filter, where it is cleaned and then sent onward to the fuel injectors or carburetor. This ensures that the engine receives clean fuel, which is vital for optimal performance and longevity. The tube must be correctly aligned with the filter to maintain the integrity of the fuel flow and prevent any bypass of contaminants.

Conclusion

In summary, the Part 3973805 Fuel Supply Tube is a key element in the fuel delivery network, working in tandem with the engine’s plumbing and fuel filter to provide a consistent and clean fuel supply to the engine. Its role in ensuring efficient and reliable fuel delivery is critical for the performance and efficiency of heavy-duty truck engines.