3904441
Injector Fuel Supply Tube
Cummins®

Introduction

The Injector Fuel Supply Tube 3904441, manufactured by Cummins, is a critical component in the fuel delivery system of commercial trucks. This part ensures a consistent and reliable supply of fuel to the injectors, contributing to the efficient operation of diesel engines and overall fuel efficiency ³.

Basic Concepts of Injector Fuel Supply Tubes

An injector fuel supply tube is a conduit that transfers fuel from the fuel rail to the injectors in a diesel engine. It operates under high pressure and is constructed from durable materials to withstand engine rigors ². The tube maintains a steady fuel flow, essential for precise fuel injector operation and combustion.

Purpose and Role in Truck Operation

The Injector Fuel Supply Tube 3904441 enhances truck operation by ensuring efficient fuel delivery to the injectors. It maintains consistent fuel pressure and flow, necessary for optimal combustion, leading to better engine performance, increased fuel efficiency, and reduced emissions ³.

Key Features

The Injector Fuel Supply Tube 3904441 is made from high-quality materials for durability and resistance to high pressures and temperatures. Its design ensures a secure fit and reliable fuel delivery, with features like reinforced sections or specialized coatings for enhanced performance and longevity ¹.

Benefits

Using the Injector Fuel Supply Tube 3904441 improves fuel efficiency by ensuring consistent and correct-pressure fuel delivery, leading to efficient combustion and reduced fuel consumption. It also enhances engine performance, increasing power output and smoother operation, and contributes to the engine’s overall durability and longevity ³.

Installation and Compatibility

Proper installation of the Injector Fuel Supply Tube 3904441 is crucial for engine performance. Installation should follow manufacturer guidelines for a secure fit and proper function. Compatibility with various truck models is important, and specific compatibility information should be consulted to ensure suitability ².

Maintenance and Troubleshooting

Regular maintenance of the Injector Fuel Supply Tube 3904441 is vital for optimal performance and longevity. Inspections should check for wear, leaks, or damage. Common issues include fuel leaks, reduced fuel pressure, or inconsistent engine performance, indicating potential problems with the fuel supply tube. Troubleshooting may involve checking connections, inspecting for damage, and ensuring proper installation ¹.

Safety Considerations

When handling the Injector Fuel Supply Tube 3904441, safety considerations are important to prevent accidents. Proper handling procedures, including the use of safety equipment like gloves and eye protection, should be followed. Awareness of potential hazards such as fuel leaks and the high-pressure environment is crucial ³.

Cummins Overview

Cummins Inc. is renowned for producing high-quality automotive components. The company’s history of innovation and commitment to excellence is evident in its wide range of products for various applications, including commercial trucks. The Injector Fuel Supply Tube 3904441 exemplifies Cummins’ dedication to manufacturing reliable and durable components for diesel engines ³.

Cummins Injector Fuel Supply Tube (Part 3904441)

The Cummins Injector Fuel Supply Tube, part number 3904441, is crucial for the fuel delivery system in certain Cummins engines. It ensures efficient and reliable fuel transfer from the fuel pump to the fuel injectors.

Application in Cummins Engines

6B5.9 and 6C8.3 Engines

The Injector Fuel Supply Tube (3904441) is engineered for the Cummins 6B5.9 and 6C8.3 engines, known for their robust performance and reliability in industrial and commercial applications. The part ensures optimal fuel flow and injection timing, compatible with these engines’ unique specifications ².

Compatibility and Installation

Proper installation of the Injector Fuel Supply Tube (3904441) in the 6B5.9 and 6C8.3 engines is crucial. It should align correctly with the fuel injectors and ensure secure, leak-free connections. The tube’s material and construction are designed to withstand high pressures and temperatures, ensuring durability and performance ¹.

Maintenance and Performance

Regular maintenance of the Injector Fuel Supply Tube is essential for engine efficiency and performance. Inspections should check for wear, damage, or leaks, and the tube should be replaced if necessary. Proper maintenance prevents fuel delivery issues, ensuring smooth and efficient engine operation ³.

Role of Part 3904441 Injector Fuel Supply Tube in Engine Systems

The Injector Fuel Supply Tube, part number 3904441, is vital in the engine’s fuel delivery system. It works with other components to ensure efficient and reliable fuel delivery to the injectors.

Integration with Fuel Plumbing

The Injector Fuel Supply Tube connects the fuel rail to the fuel injectors, providing a direct pathway for pressurized fuel. It ensures consistent and correct-pressure fuel delivery, vital for proper fuel atomization during combustion ².

Interaction with Fuel Pump Conversion Kit

When a fuel pump conversion kit is installed, the Injector Fuel Supply Tube adapts the new fuel pump’s output to the engine’s fuel requirements. It must be compatible with the new fuel pressures and flow rates, ensuring the fuel system operates within specified parameters ¹.

Coordination with Fuel Rail and Injectors

The Injector Fuel Supply Tube is directly connected to the fuel rail, ensuring each injector receives an equal fuel supply. This balance is essential for optimal engine performance and efficiency ³.

Role in Overall Fuel System

In the broader context of the fuel system, the Injector Fuel Supply Tube is part of a network that includes the fuel tank, fuel pump, fuel filter, and fuel injectors. It ensures fuel travels from the tank to the injectors without leaks or restrictions, contributing to the engine’s overall reliability and performance ².

Understanding the role of the Injector Fuel Supply Tube within these components helps engineers and mechanics diagnose issues, perform maintenance, and make informed decisions when upgrading or modifying fuel systems ³.

Conclusion

The Injector Fuel Supply Tube 3904441 by Cummins is a vital component in the fuel delivery system of commercial trucks and certain Cummins engines. Its role in ensuring consistent and reliable fuel supply to the injectors contributes significantly to engine performance, fuel efficiency, and overall reliability. Proper installation, maintenance, and understanding of its integration within the fuel system are essential for optimal engine operation and longevity.