3975408
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3975408 Fuel Supply Tube is a component designed for use in the fuel systems of heavy-duty trucks. It facilitates the efficient transfer of fuel from the tank to the engine, ensuring a consistent and reliable fuel supply under various operating conditions.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube is a conduit within the fuel system that carries fuel from the tank to the engine. It maintains the integrity of the fuel as it travels, ensuring it is free from contaminants and delivered at the correct pressure. The proper function of a fuel supply tube is vital for the overall performance and efficiency of the engine ¹.

Purpose and Role in Truck Operation

The Cummins 3975408 Fuel Supply Tube is engineered to support the demanding requirements of heavy-duty truck operations. It ensures a steady fuel flow to the engine, which is essential for maintaining engine performance and efficiency. By providing a reliable fuel supply, it contributes to the overall operational effectiveness of the truck ².

Key Features

The Cummins 3975408 Fuel Supply Tube is constructed from materials that offer durability and resistance to the corrosive effects of fuel. Its design includes features that enhance its functionality, such as precise fittings that ensure a secure connection within the fuel system. These characteristics contribute to the tube’s ability to withstand the rigors of heavy-duty use ³.

Benefits

Utilizing the Cummins 3975408 Fuel Supply Tube can lead to improved fuel efficiency, as it ensures that fuel is delivered to the engine without unnecessary loss or contamination. This can result in enhanced engine performance and greater reliability across a range of operating conditions, contributing to the overall effectiveness of the truck’s fuel system ⁴.

Installation and Compatibility

When installing the Cummins 3975408 Fuel Supply Tube, it is important to follow the manufacturer’s guidelines to ensure proper fitment and function within the truck’s fuel system. Compatibility with different truck models and fuel systems should be verified to ensure optimal performance and safety.

Maintenance and Troubleshooting

Routine maintenance of the Cummins 3975408 Fuel Supply Tube involves regular inspection for signs of wear or damage. Common issues may include leaks or blockages, which can be identified through visual inspection and pressure testing. Addressing these issues promptly can help maintain the efficiency and reliability of the fuel system.

Safety Considerations

When working with the Cummins 3975408 Fuel Supply Tube, it is important to observe safety precautions. This includes ensuring that the fuel system is depressurized before beginning any work and using appropriate personal protective equipment. Proper handling, installation, and maintenance are key to ensuring the safe and reliable operation of the fuel supply tube.

Cummins Overview

Cummins Inc. is a well-established company with a strong reputation in the automotive industry for producing high-quality components for heavy-duty trucks. With a history of innovation and commitment to excellence, Cummins continues to be a trusted name in the manufacturing of reliable and durable automotive parts.

Cummins Engine Part 3975408: Fuel Supply Tube Compatibility

The Cummins part number 3975408, identified as a Fuel Supply Tube, is designed to fit seamlessly within several of Cummins’ engine models. This component is crucial for the proper functioning of the fuel system, ensuring that fuel is delivered efficiently and safely from the fuel tank to the engine.

QSC8.3 CM850 (CM2850)

The Fuel Supply Tube (part number 3975408) is engineered to integrate perfectly with the QSC8.3 CM850 (CM2850) engine. This engine is known for its robust performance and reliability, often used in heavy-duty applications. The fuel supply tube ensures that the engine receives a consistent and uninterrupted fuel flow, which is critical for maintaining optimal engine performance and efficiency.

QSL8.9 CM2150 L141

For the QSL8.9 CM2150 L141 engine, the Fuel Supply Tube (part number 3975408) is an essential component that ensures the fuel system operates smoothly. This engine model is designed for high-performance applications, and the fuel supply tube plays a vital role in delivering the necessary fuel to the engine under various operating conditions. Its precise fit and durability contribute to the engine’s overall reliability and longevity.

QSL9 CM850 (CM2850)

Similar to the QSC8.3 CM850 (CM2850), the QSL9 CM850 (CM2850) engine also benefits from the use of the Fuel Supply Tube (part number 3975408). This part is designed to handle the demands of this engine model, which is known for its power and efficiency. The fuel supply tube ensures that the engine receives the correct amount of fuel, which is essential for maintaining peak performance and preventing potential fuel system issues.

By ensuring that the Fuel Supply Tube (part number 3975408) is correctly installed and maintained, users can help to ensure that their Cummins engines operate at their best. This part is a critical component in the fuel delivery system, and its compatibility with the specified engine models underscores its importance in maintaining engine performance and reliability.

Role of Part 3975408 Fuel Supply Tube in Engine Systems

The part 3975408 Fuel Supply Tube is an essential component in the fuel delivery system of various engine setups. It is responsible for transporting fuel from the fuel tank to the fuel filter and subsequently to the engine’s fuel injectors or carburetor.

Integration with Plumbing

In the context of engine plumbing, the Fuel Supply Tube interfaces with the fuel lines that run throughout the vehicle. It ensures a consistent and reliable flow of fuel, minimizing the risk of fuel starvation or leaks. The tube is typically connected to the fuel tank via a secure fitting, which may include clamps or specialized connectors to prevent any fuel leakage. From the tank, it routes to the fuel filter, ensuring that any contaminants are removed before the fuel reaches the engine.

Interaction with Fuel Filter

The Fuel Supply Tube plays a significant role in the fuel filtration process. It delivers fuel to the fuel filter, where impurities and debris are removed to protect the engine’s sensitive components. The tube is designed to maintain fuel pressure and flow rate, ensuring that the filter operates efficiently. After passing through the filter, the clean fuel is then directed to the fuel injectors or carburetor, where it is mixed with air and combusted to produce power.

Ensuring Efficient Fuel Delivery

By providing a dedicated pathway for fuel, the Fuel Supply Tube helps maintain the integrity of the fuel delivery system. It is engineered to withstand the pressures and temperatures associated with fuel transport, ensuring long-term reliability. The tube’s design also considers factors such as fuel type, flow rate, and environmental conditions to optimize performance.

Conclusion

In summary, the Cummins 3975408 Fuel Supply Tube is a vital link in the fuel delivery chain, working in conjunction with the plumbing and fuel filter to ensure that the engine receives a consistent and clean supply of fuel. Its role in maintaining engine performance and efficiency underscores its importance in the overall operation of heavy-duty trucks.