4995462
Injector Fuel Supply Tube
Cummins®

Introduction

The Cummins Injector Fuel Supply Tube, identified by part number 4995462, is a vital component in the fuel system of commercial trucks powered by Cummins engines. This tube ensures the delivery of fuel from the fuel rail to the injectors, maintaining the engine’s efficiency and reliability.

Basic Concepts

Injector fuel supply tubes are essential components within the fuel system of diesel engines. They transport fuel under high pressure from the fuel rail to the individual injectors, directly influencing engine performance by ensuring consistent and correct pressure delivery to each injector ¹.

Purpose and Role

The Cummins Injector Fuel Supply Tube (Part #4995462) is engineered to facilitate efficient fuel delivery to the injectors in Cummins engines. It connects the fuel rail to the injectors, ensuring fuel is supplied under the necessary pressure and quantity for combustion, contributing to smooth operation, power output, and fuel efficiency ².

Key Features

This Cummins part is designed with materials that withstand high pressures and temperatures within the fuel system. It may feature reinforced sections or specialized coatings to enhance resistance to wear and corrosion, ensuring durability in demanding conditions.

Benefits

Utilizing this part offers advantages such as improved fuel efficiency through precise fuel delivery, enhancing engine performance with consistent power output and smoother operation. Its durable construction contributes to the engine’s overall reliability, reducing fuel system-related issues.

Installation and Compatibility

Proper installation of the Injector Fuel Supply Tube is crucial for its effective operation and compatibility with the engine. It is designed for specific Cummins engine models, ensuring a secure and leak-free connection between the fuel rail and the injectors. Following manufacturer guidelines for installation is recommended to maintain fuel system integrity and ensure optimal performance.

Maintenance and Troubleshooting

Regular maintenance of the Injector Fuel Supply Tube is essential for its performance and longevity. This includes checking for wear, corrosion, or leaks and addressing issues promptly to prevent fuel system failures. Troubleshooting may involve inspecting the tube for damage, ensuring proper connections, and cleaning or replacing the tube if necessary.

Common Failure Modes

Injector fuel supply tubes can experience leaks, blockages, or corrosion, impacting engine performance by disrupting consistent fuel delivery to the injectors. Leaks may result in fuel loss and reduced pressure, while blockages can prevent fuel from reaching the injectors, leading to incomplete combustion and decreased engine efficiency. Corrosion, often caused by contaminated fuel, can weaken the tube and lead to failures.

Upgrades and Modifications

Upgrades or modifications to the injector fuel supply tube, such as higher flow rates, improved materials for durability, or specialized coatings to resist corrosion, can enhance engine performance, efficiency, and reliability, catering to specific vehicle needs and operating conditions.

Cummins Overview

Cummins Inc. is a global leader in designing, manufacturing, and distributing engines, filtration, and power generation products. With a history of innovation and quality, Cummins has a strong reputation in the commercial truck industry, offering a wide range of engines and components designed for reliability, performance, and efficiency.

Compatibility

The Cummins Injector Fuel Supply Tube (Part 4995462) is compatible with various Cummins engines, ensuring efficient and reliable fuel transfer from the fuel pump to the injectors, maintaining engine performance and fuel economy.

B3.3 Engine Series

This part is designed for the B3.3 engine series, known for robust construction and reliability in heavy-duty applications. It ensures a secure and leak-free connection, crucial for engine efficiency and longevity.

Application Grouping

For B3.3 series engines, the Injector Fuel Supply Tube is engineered for various applications, including industrial machinery, construction equipment, and agricultural machinery, ensuring reliable performance across demanding settings.

Role in Engine Systems

The Injector Fuel Supply Tube, part number 4995462, is integral to the fuel delivery system of various engine setups. It ensures a consistent and reliable fuel supply to the injectors, essential for optimal engine performance.

Integration with Fuel Injectors

This part connects directly to the fuel injectors, providing a pathway for pressurized fuel to reach the combustion chamber. Its precise design minimizes fuel leakage and ensures a steady fuel stream to the injectors, vital for engine efficiency and power output.

Interaction with the Fuel Rail

Mounted on the fuel rail, the Injector Fuel Supply Tube facilitates fuel distribution to each injector. This interaction ensures each cylinder receives the correct fuel amount, necessary for balanced engine operation.

Contribution to Fuel Pressure Regulation

In conjunction with the fuel pressure regulator, part 4995462 helps maintain appropriate fuel pressure within the system. Consistent fuel pressure is necessary for proper fuel atomization by the injectors, enhancing combustion efficiency and reducing emissions.

Enhancement of Performance Parts

When upgrading to performance parts, the Injector Fuel Supply Tube ensures high-flow injectors and other enhancements receive an adequate fuel supply, particularly important in high-performance engines with increased fuel demand.

Support for Engine Management Systems

Modern engine management systems rely on precise fuel delivery to optimize performance and fuel economy. Part 4995462 provides a reliable fuel pathway that supports the engine control unit’s (ECU) commands for fuel injection timing and quantity.

Role in Maintenance and Upgrades

During maintenance or engine component upgrades, inspecting the Injector Fuel Supply Tube for wear or damage is essential to prevent fuel leaks and maintain the fuel system’s overall reliability.

Conclusion

The Cummins Injector Fuel Supply Tube (Part 4995462) is a key element in the fuel delivery network, supporting various engine components to ensure efficient and reliable operation. Its role in maintaining engine performance, efficiency, and reliability underscores its importance in the fuel system of Cummins engines.