3943463
Fuel Supply Tube
Cummins®

Introduction

The Cummins 3943463 Fuel Supply Tube is a critical component in the fuel systems of commercial trucks. It is designed to transport fuel from the tank to the engine, ensuring a consistent and reliable fuel supply for combustion. This part plays a significant role in maintaining the efficiency and performance of the vehicle’s engine.

Purpose and Function

The primary function of the Cummins 3943463 Fuel Supply Tube is to facilitate the delivery of fuel from the tank to the engine. It ensures that fuel is supplied under consistent pressure and flow, which is essential for the engine’s operation. This consistent delivery helps maintain the engine’s performance and efficiency by providing the necessary fuel at the right pressure and volume ¹.

Design and Construction

This Cummins part is constructed from materials that offer durability and resistance to the corrosive effects of fuel. It may include protective coatings or reinforcements to enhance its longevity and performance. These design features are important for withstanding the operational stresses and environmental conditions encountered in commercial trucking ².

Integration Within the Fuel System

Within the fuel system, the Fuel Supply Tube connects the fuel tank to the fuel filter and subsequently to the fuel injectors. This integration ensures a seamless flow of fuel from storage to combustion, playing a key role in the overall functionality of the fuel system. Proper installation and connection of this tube are important for the system’s integrity and performance ³.

Benefits of Using Cummins 3943463 Fuel Supply Tube

Utilizing the Cummins 3943463 Fuel Supply Tube offers several advantages. It contributes to improved fuel efficiency by ensuring a consistent fuel supply. Its design and construction enhance the reliability of the fuel system. Additionally, it is specifically engineered for compatibility with Cummins engines, ensuring optimal performance and integration within these systems.

Common Issues and Troubleshooting

Fuel Supply Tubes, including the Cummins 3943463, may encounter issues such as leaks or blockages. These problems can affect the fuel system’s performance. Troubleshooting steps may involve inspecting the tube for signs of wear or damage, checking connections for tightness, and ensuring there are no obstructions in the fuel path.

Maintenance and Care

Regular maintenance of the Fuel Supply Tube is important for its longevity and performance. This includes periodic inspections for signs of wear, corrosion, or damage. Replacement guidelines should be followed to ensure that the tube is replaced before it fails, maintaining the integrity of the fuel system.

Safety Considerations

When handling and working with the Fuel Supply Tube, it is important to follow safety precautions. This includes ensuring that the fuel system is depressurized before any work is performed and using appropriate personal protective equipment. Adherence to these safety guidelines helps prevent accidents and ensures compliance with industry standards.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel and natural gas engines, as well as related technologies. With a history of innovation and a commitment to quality, Cummins serves the commercial vehicle, power generation, and industrial markets, providing reliable and efficient power solutions.

Cummins Engine Compatibility with Fuel Supply Tube Part 3943463

The Cummins Fuel Supply Tube part number 3943463 is designed to fit a variety of Cummins engines, ensuring compatibility across multiple models. Here is a detailed look at the engines this part fits:

ISB Series

• ISB CM550
• ISB CM850
• ISB/ISD6.7 CM2150 SN

ISBE Series

• ISBE CM2150
• ISBE4 CM850

ISC Series

• ISC CM2150
• ISC CM850
• ISC8.3 CM2250

ISL Series

• ISL CM2150
• ISL9 CM2150 SN
• ISL9 CM2250

QSB Series

• QSB4.5 CM850 (CM2850)
• QSB5.9 44 CM550
• QSB6.7 CM2250
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

QSC Series

• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250

QSL Series

• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850 (CM2850)

This part is engineered to ensure seamless integration with the specified engines, providing reliable performance and durability. It is crucial to verify the part number and engine compatibility before installation to ensure optimal functionality and avoid potential issues.

Role of Part 3943463 Fuel Supply Tube in Engine Systems

The Part 3943463 Fuel Supply Tube is integral to the efficient operation of various engine systems. It serves as a vital conduit within the fuel system, ensuring a consistent and reliable flow of fuel from the fuel tank to the fuel pump. This steady supply is essential for maintaining engine performance and efficiency.

In the context of fuel system accessories, the Fuel Supply Tube interfaces with components such as the fuel filter and fuel transfer mechanisms. Its design allows for seamless integration, enabling the filtration of impurities before the fuel reaches the engine. This interaction ensures that only clean fuel is delivered, which is paramount for the longevity and optimal function of the engine.

Furthermore, the Fuel Supply Tube plays a significant role in the plumbing of the fuel system. It connects to various accessories that regulate and monitor fuel flow, pressure, and temperature. These connections are designed to be secure and leak-proof, which is essential for safety and performance.

Overall, the Part 3943463 Fuel Supply Tube is a key component that facilitates the smooth operation of the fuel system, ensuring that engines receive the precise amount of fuel needed for efficient combustion and performance.

Conclusion

The Cummins 3943463 Fuel Supply Tube is a vital component in the fuel systems of commercial trucks, ensuring a consistent and reliable fuel supply for engine operation. Its durable construction, seamless integration within the fuel system, and compatibility with various Cummins engines make it an essential part for maintaining engine performance and efficiency. Regular maintenance and adherence to safety guidelines are important for the longevity and optimal function of this part.