3920117
Injector Fuel Supply Tube
Cummins®

Introduction

The Injector Fuel Supply Tube 3920117 is a critical component in the fuel systems of heavy-duty trucks, designed to deliver fuel from the tank to the injectors, ensuring a consistent and reliable fuel supply for optimal engine performance ¹.

Function and Operation

This Cummins part channels fuel from the tank to the injectors, maintaining the necessary fuel pressure for optimal engine operation. It is engineered to withstand high pressures and temperatures, ensuring a steady fuel flow to the injectors, which is vital for precise injector operation and efficient combustion ².

Key Features

Constructed from high-quality materials, the Injector Fuel Supply Tube 3920117 offers durability and resistance to diesel fuel corrosion. Its design includes reinforced connections to prevent leaks and a smooth interior to minimize fuel flow resistance, contributing to its reliability and longevity in demanding conditions ³.

Benefits

The Injector Fuel Supply Tube 3920117 enhances fuel delivery efficiency by ensuring a consistent and pressurized fuel supply to the injectors, resulting in improved engine performance and precision. Its robust construction and design features make it suitable for heavy-duty applications where durability is essential.

Installation and Compatibility

Proper installation of this Cummins part is crucial for its effective operation. It is designed for compatibility with Cummins engines and fuel systems, ensuring seamless integration. Following installation guidelines is essential to secure connections and prevent fuel leaks.

Maintenance and Troubleshooting

Regular maintenance of the Injector Fuel Supply Tube is recommended to ensure optimal performance. This includes inspecting for wear or damage, cleaning to remove contaminants, and checking for leaks or blockages. Promptly addressing these issues can prevent more significant problems and ensure the continued reliability of the fuel system.

Common Issues and Solutions

Typical problems with the Injector Fuel Supply Tube include leaks, blockages, and wear. Leaks may be due to loose connections or damaged sections, requiring tightening or replacement. Blockages can be caused by fuel contaminants, necessitating a thorough cleaning. Wear and damage may require tube replacement to maintain fuel system integrity.

Cummins Overview

Cummins Inc. is renowned for its high-quality components for commercial vehicles, with a history of innovation and commitment to excellence. The Injector Fuel Supply Tube 3920117 exemplifies Cummins’ focus on quality and performance, designed to meet the demanding requirements of heavy-duty truck applications.

Cummins Injector Fuel Supply Tube (Part 3920117) Compatibility

The Cummins Injector Fuel Supply Tube, part number 3920117, is essential for the fuel delivery system in several Cummins engines. It ensures efficient and reliable fuel transfer from the supply system to the injectors, maintaining optimal engine performance.

Engine Compatibility

• 6C8.3 Series: The 3920117 is designed for the 6C8.3 engine series, used in heavy-duty applications like construction equipment and agricultural machinery. Its compatibility ensures uninterrupted fuel supply, crucial for engine efficiency and longevity.

Importance of the Fuel Supply Tube

This part connects the fuel supply lines to the injectors, ensuring precise fuel delivery at the correct pressure and timing. This is vital for combustion efficiency and power output. The 3920117 is engineered to meet Cummins engines’ stringent requirements, ensuring durability and reliability.

Application in Various Models

While primarily for the 6C8.3 series, the 3920117 is also compatible with other Cummins engine models. This versatility is valuable for technicians working with multiple engine types, ensuring fuel system integrity and preventing potential failures.

Maintenance and Replacement

Regular maintenance and timely replacement of the Injector Fuel Supply Tube are crucial for Cummins engines’ longevity and performance. Inspecting for wear, leaks, or damage during routine checks and using genuine Cummins parts like the 3920117 ensures peak engine efficiency.

Role of Part 3920117 Injector Fuel Supply Tube in Engine Systems

The 3920117 Injector Fuel Supply Tube is vital for the fuel delivery system, transporting fuel from the fuel rail to the injectors for a consistent and precise supply to each cylinder.

Integration with Fuel System Components

1. Fuel Rail: Connects to the fuel rail, ensuring even fuel distribution and maintaining required pressure for optimal injection.
2. Injectors: Supplies fuel to each injector, ensuring a steady flow for precise metering and combustion efficiency.
3. Fuel Return Line: Manages return flow by maintaining consistent pressure within the fuel rail.

Interaction with Plumbing Components

1. Fuel Lines: Interfaces with primary fuel lines, secured with fittings for a leak-free seal.
2. Connectors and Fittings: Joins the tube to other fuel system components, designed to withstand high pressures and temperatures.
3. Seals and Gaskets: Prevents fuel leaks at connection points, ensuring efficient fuel delivery.

Functionality in the Fuel System

Operating under high pressure, the Injector Fuel Supply Tube provides a reliable fuel pathway, ensuring injectors operate within specified parameters. This consistent fuel supply is essential for engine performance, fuel efficiency, and emissions control.

Conclusion

The Injector Fuel Supply Tube 3920117 by Cummins is a vital component in the fuel delivery system of heavy-duty engines, ensuring efficient and reliable fuel transfer to the injectors. Its robust construction, compatibility with Cummins engines, and role in maintaining optimal engine performance make it an essential part for technicians and maintenance professionals.