5284841
Injector Fuel Supply Tube
Cummins®

The Injector Fuel Supply Tube, part number 5284841, is a critical component manufactured by Cummins for diesel engines. This article delves into the function, features, benefits, and maintenance of this Cummins part within a truck’s fuel system.

Basic Concepts

The Injector Fuel Supply Tube is integral to the fuel system of diesel engines, responsible for delivering fuel from the fuel tank to the injectors. It ensures a consistent and pressurized flow of fuel, essential for the proper operation of the fuel injectors ¹.

Function and Role

This Cummins part plays a pivotal role in the fuel delivery system by transporting fuel from the fuel tank to the injectors. It ensures that the injectors receive a steady supply of fuel under the correct pressure, which is necessary for efficient combustion and engine performance ².

Key Features

• Constructed from durable materials to withstand high pressure and temperature.
• Designed to fit specific Cummins engine models, ensuring compatibility and efficient performance.
• Features precise engineering to maintain fuel flow integrity and prevent leaks.

Benefits

• Enhances fuel delivery efficiency, contributing to better engine performance.
• Constructed to be robust and long-lasting, reducing the need for frequent replacements.
• Helps in maintaining consistent fuel pressure, which is vital for the reliable operation of fuel injectors.

Troubleshooting and Maintenance

Regular inspection of the Injector Fuel Supply Tube is recommended to identify any signs of wear, leaks, or damage. Maintenance practices include:

• Checking for fuel leaks around the tube connections.
• Ensuring that the tube is free from obstructions and kinks.
• Replacing the tube if there are signs of damage or if fuel delivery issues are detected.

Compatibility with Cummins Engines

The Injector Fuel Supply Tube part number 5284841 is designed to fit a variety of Cummins engines, ensuring optimal fuel delivery and performance. Here is a detailed breakdown of its compatibility with the listed engines:

D4.0 CM2620 D103B

This part is compatible with the D4.0 CM2620 D103B engine, providing a reliable fuel supply to the injectors. This ensures efficient combustion and consistent engine performance.

F3.8 CM2350 F128C and F3.8 CM2620 F137B

Both the F3.8 CM2350 F128C and F3.8 CM2620 F137B engines benefit from the use of this Injector Fuel Supply Tube. It is engineered to maintain the integrity of the fuel delivery system, enhancing the overall efficiency and reliability of these engines.

F4.5 CM2620 F139B and F4.5 CM2620 F141C

The part 5284841 is also suitable for the F4.5 CM2620 F139B and F4.5 CM2620 F141C engines. These engines require precise fuel delivery to achieve optimal performance, and this fuel supply tube ensures that the injectors receive the correct amount of fuel at the right pressure.

ISF3.8 CM2220 F103

The ISF3.8 CM2220 F103 engine is another model that is compatible with the part 5284841. This compatibility ensures that the fuel supply system operates smoothly, contributing to the engine’s efficiency and longevity.

QSF3.8 CM2350 F107

Lastly, the QSF3.8 CM2350 F107 engine can also utilize the part 5284841. This compatibility is crucial for maintaining the engine’s performance and ensuring that the injectors function correctly.

Interaction with Key Engine Components

The Injector Fuel Supply Tube (part 5284841) interfaces with several key engine components:

1. Cylinder Head and Head Assembly: Mounted on the cylinder head, it works with the head assembly to maintain fuel pressure and deliver fuel to the injectors.
2. Fuel Injectors: Provides a reliable fuel pathway to the injectors, which spray atomized fuel into the cylinders.
3. Camshaft and Valve Train: Ensures that fuel is delivered at the optimal moment in the engine cycle, enhancing performance and efficiency.
4. Connecting Rod and Piston: The efficient combustion from precise fuel delivery translates into effective force on the pistons, transmitted via the connecting rods to the crankshaft.
5. Cylinder and Combustion Process: The fuel delivered through this part combusts within the cylinder, driving the piston downward and influencing the engine’s performance and efficiency.

Conclusion

The Injector Fuel Supply Tube (part 5284841) is a vital component in the fuel delivery system, working in harmony with other engine parts to ensure optimal performance and efficiency. Regular maintenance and inspection of this part are essential for the reliable operation of Cummins engines.