4988809
Injector Fuel Supply Tube
Cummins®

The Injector Fuel Supply Tube, part number 4988809, manufactured by Cummins, is a component designed for use in commercial truck engines. Cummins, a well-established name in the engine manufacturing industry, produces a range of parts that contribute to the efficiency and reliability of truck engines. This Cummins part is significant within this context as it plays a role in the fuel delivery system, ensuring that fuel is efficiently supplied to the injectors ¹.

Function and Operation

The Injector Fuel Supply Tube operates as a conduit within the fuel system of a truck engine. Its primary function is to deliver fuel from the fuel rail to the injectors. This tube ensures a consistent and pressurized flow of fuel, which is necessary for the injectors to atomize the fuel properly during combustion. The operation of this tube is integral to maintaining the desired fuel pressure and flow rate, which are essential for engine performance ².

Purpose of the Injector Fuel Supply Tube

The Injector Fuel Supply Tube serves a specific role in the operation of a truck engine. It contributes to fuel efficiency by ensuring that fuel is delivered to the injectors in a controlled and consistent manner. This precise delivery helps in achieving optimal combustion, which in turn enhances engine performance. The tube’s design and function are tailored to support the engine’s requirements for fuel delivery, thereby playing a part in the overall efficiency and performance of the truck ³.

Key Features

The Injector Fuel Supply Tube 4988809 is characterized by several key features that enhance its functionality. It is constructed from materials that are resistant to the corrosive effects of fuel, ensuring durability and longevity. The design of the tube includes features that allow for secure attachment to both the fuel rail and the injectors, minimizing the risk of leaks. Additionally, the tube is engineered to withstand the high pressures present in modern fuel systems, contributing to its reliability.

Benefits

The advantages provided by the Injector Fuel Supply Tube include improved fuel delivery, which leads to more efficient combustion and better engine performance. The consistent fuel flow facilitated by the tube can result in enhanced fuel economy for the truck. Furthermore, the reliable operation of this component can lead to potential cost savings for fleet operators by reducing the frequency of maintenance and repair needs associated with the fuel system.

Installation and Compatibility

Proper installation of the Injector Fuel Supply Tube is vital to ensure it functions correctly within the fuel system. Installation procedures should follow manufacturer guidelines to secure the tube in place and maintain the integrity of the fuel system. The tube is compatible with various Cummins engine models, designed to fit within the specified fuel system configurations of these engines.

Maintenance and Troubleshooting

Routine maintenance of the Injector Fuel Supply Tube involves checking for signs of wear or damage, ensuring connections are secure, and verifying that there are no leaks in the fuel system. Troubleshooting common issues may involve inspecting the tube for blockages or restrictions that could affect fuel flow. Regular maintenance can help in identifying potential problems before they lead to more significant issues within the engine.

Safety Considerations

When working with the Injector Fuel Supply Tube, it is important to follow safety precautions to protect mechanics and operators. This includes ensuring that the fuel system is depressurized before any work is performed to prevent fuel spray, which can be hazardous. Additionally, using the correct tools and following proper procedures can help in maintaining a safe working environment.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a history spanning over a century, Cummins has established a reputation for quality and reliability in the commercial truck industry. The company’s product offerings are designed to meet the demanding requirements of commercial applications, providing solutions that enhance the performance and efficiency of truck engines.

Conclusion

The Injector Fuel Supply Tube, part number 4988809, is a vital component in the fuel delivery system of Cummins engines. Its role in ensuring a consistent and pressurized fuel supply to the injectors is crucial for maintaining engine performance and efficiency. The tube’s design, featuring durable materials and secure attachment points, contributes to its reliability and longevity. Proper installation, maintenance, and adherence to safety protocols are essential for maximizing the benefits of this part in commercial truck engines.