3967674
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3967674 Fuel Supply Tube is a critical component in the fuel system of commercial trucks, ensuring efficient and consistent fuel delivery to the engine. This part plays a significant role in maintaining the operational integrity and performance of the vehicle.

Basic Concepts of Fuel Supply Tubes

A fuel supply tube serves as a conduit within the fuel system, facilitating the transfer of fuel from the tank to the engine. Its primary function is to provide a reliable pathway for fuel, ensuring that the engine receives a steady supply necessary for combustion. The efficiency of the fuel delivery system is closely tied to the performance of the truck’s engine, making the fuel supply tube a key component ¹.

Purpose and Role in Truck Operation

The Cummins 3967674 Fuel Supply Tube is integral to the fuel delivery system of a truck. It ensures a consistent flow of fuel to the engine, which is essential for maintaining engine performance under various operating conditions. By providing a direct and unobstructed path for fuel, this tube helps in achieving optimal engine efficiency and power output ².

Key Features

The Cummins 3967674 Fuel Supply Tube is designed with materials and elements that enhance its performance and durability. Its material composition is chosen to withstand the pressures and temperatures within the fuel system. Design elements such as its diameter and length are optimized to ensure efficient fuel flow. Additionally, any unique characteristics, such as reinforced sections or specific coatings, contribute to its overall effectiveness and longevity.

Benefits

The use of the Cummins 3967674 Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring that fuel is delivered without restriction. This consistent fuel flow enhances engine performance, allowing the truck to operate more smoothly and with greater power. Furthermore, the tube’s design and material contribute to its reliability, making it suitable for use in a variety of operating conditions ³.

Installation and Compatibility

Proper installation of the Cummins 3967674 Fuel Supply Tube is important for ensuring its effectiveness and the overall performance of the truck’s fuel system. Installation procedures should follow manufacturer guidelines to ensure compatibility with the specific truck model. Considerations for installation may include alignment with other fuel system components and securing the tube to prevent movement or damage.

Maintenance and Troubleshooting

Routine maintenance of the Cummins 3967674 Fuel Supply Tube involves inspecting it for signs of wear, leaks, or obstructions. Regular checks can help identify issues before they lead to more significant problems. Troubleshooting common issues may involve checking for proper installation, ensuring there are no kinks or blockages in the tube, and verifying that it is securely connected to other fuel system components.

Safety Considerations

When working with the Cummins 3967674 Fuel Supply Tube, it is important to follow safety precautions. This includes handling the tube with care to avoid damage and being aware of the potential hazards associated with fuel systems, such as fuel spills or leaks. Proper ventilation and the use of protective equipment are recommended when performing maintenance or repairs on the fuel supply tube.

Cummins Overview

Cummins Inc. is a well-established manufacturer in the automotive industry, known for its high-quality components for commercial vehicles. With a history of innovation and a commitment to producing reliable parts, Cummins has built a reputation for excellence. The company’s focus on quality and performance is evident in its range of products, including the Cummins 3967674 Fuel Supply Tube.

Cummins Fuel Supply Tube 3967674 Compatibility

The Cummins Fuel Supply Tube part number 3967674 is designed to integrate seamlessly with a variety of Cummins engines. This component is crucial for maintaining the integrity of the fuel delivery system, ensuring that fuel is efficiently and effectively transported from the fuel tank to the engine.

Engine Compatibility

• 4B3.9 Series

  • The 3967674 Fuel Supply Tube is specifically engineered to fit within the 4B3.9 engine series. This series is known for its robust performance and reliability, making it a popular choice in various industrial and commercial applications. The tube’s design ensures a secure fit, minimizing the risk of leaks and maintaining consistent fuel pressure.

• Other Cummins Engines

  • While the primary focus is on the 4B3.9 series, the 3967674 Fuel Supply Tube is also compatible with other Cummins engines that share similar design parameters. This includes engines that utilize a comparable fuel delivery system architecture, ensuring that the tube can be used across multiple models without modification.

Installation and Integration

• Precision Engineering

  • The 3967674 Fuel Supply Tube is manufactured with precision engineering to ensure a perfect fit. This includes precise dimensions and material specifications that align with Cummins’ standards, guaranteeing compatibility and performance.

• Ease of Installation

  • Installation of the 3967674 Fuel Supply Tube is straightforward, designed to integrate easily with existing fuel systems. This reduces downtime and maintenance costs, making it a practical choice for both original equipment manufacturers (OEMs) and aftermarket service providers.

Performance and Reliability

• Durability

  • Constructed from high-quality materials, the 3967674 Fuel Supply Tube is built to withstand the rigors of continuous operation. This durability ensures long-term reliability and performance, reducing the need for frequent replacements.

• Efficiency

  • The tube’s design promotes efficient fuel flow, which is critical for maintaining optimal engine performance. This efficiency helps in reducing fuel consumption and emissions, contributing to both environmental sustainability and cost savings.

Role of Part 3967674 Fuel Supply Tube in Engine Systems

The Part 3967674 Fuel Supply Tube is integral to the efficient operation of engine systems, particularly in the context of fuel delivery and filtration. This component serves as a vital conduit that facilitates the seamless transfer of fuel from the fuel tank to the engine’s fuel injection system or carburetor.

In systems equipped with fuel filter plumbing, the Fuel Supply Tube works in conjunction with the fuel filter to ensure that only clean, debris-free fuel reaches the engine. The tube is positioned upstream of the fuel filter, allowing it to draw fuel from the tank and deliver it to the filter. The filter then removes any contaminants, ensuring that the fuel entering the engine is of the highest quality. This process is essential for maintaining engine performance and longevity.

Furthermore, in more complex plumbing configurations, the Fuel Supply Tube may also interact with various sensors and regulators. These components monitor fuel pressure and flow, adjusting as necessary to meet the engine’s demands under different operating conditions. The tube’s role in these systems is to provide a consistent and reliable fuel supply, enabling these regulatory components to function effectively.

Conclusion

In summary, the Cummins 3967674 Fuel Supply Tube is a key element in the fuel delivery network of engine systems. Its proper integration and function are essential for ensuring that the engine receives a steady and clean supply of fuel, contributing to overall engine efficiency and reliability.