4990975
Threaded Plug
Cummins®

The 4990975 Threaded Plug by Cummins is a component designed for use in heavy-duty truck maintenance and operation. This plug serves a specific function within the truck’s systems, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and significance is key to maintaining the optimal performance of heavy-duty trucks.

Basic Concepts of Threaded Plugs

Threaded plugs are components used in automotive applications to seal openings in various systems. They are screwed into place, creating a secure seal that prevents the escape of fluids or gases. These plugs are vital in maintaining the integrity of systems such as fuel, oil, and coolant circuits, ensuring that these fluids remain contained within their designated pathways ¹.

Purpose of the 4990975 Threaded Plug

The 4990975 Threaded Plug plays a role in sealing specific openings within a truck’s systems. It is designed to fit into threaded ports, effectively blocking off access points that are not in use or need to be sealed for operational reasons. This plug helps maintain system pressure, prevent leaks, and ensure that the truck operates efficiently.

Key Features

The 4990975 Threaded Plug is characterized by its specific thread type and size, which are tailored to fit the ports it is intended to seal. It may also feature special coatings or treatments that enhance its resistance to corrosion and wear, ensuring durability and reliable performance over time.

Benefits

Using the 4990975 Threaded Plug offers several advantages. It contributes to improved system integrity by providing a secure seal, which helps prevent fluid leaks. This, in turn, supports the overall reliability of the vehicle, ensuring that systems operate as intended without unintended fluid loss ².

Installation Process

Installing the 4990975 Threaded Plug involves screwing it into the designated port until it is snug. It is important to use the correct tools to avoid damaging the plug or the port. Following best practices during installation ensures a proper seal, which is crucial for the component’s effectiveness.

Troubleshooting Common Issues

Common issues with threaded plugs include leaks around the seal or difficulty in removal. These problems can often be traced back to improper installation or wear and tear on the plug. Diagnosing the issue may involve inspecting the seal and the condition of the plug, with resolution strategies ranging from re-tightening to replacement.

Maintenance Tips

Regular inspection of the 4990975 Threaded Plug is recommended to ensure long-term performance. Checking for signs of wear, corrosion, or leaks can help identify potential issues before they lead to more significant problems. Maintenance may also involve cleaning the plug and its port to ensure a proper seal.

Cummins: A Brief Overview

Cummins Inc. is a well-established company in the automotive industry, particularly known for its contributions to the heavy-duty truck sector. With a history of innovation and quality, Cummins offers a wide range of products designed to enhance the performance and reliability of vehicles. The company’s reputation is built on its commitment to excellence and customer satisfaction.

Threaded Plug 4990975 Compatibility with Cummins Engines

The Threaded Plug part number 4990975 is a critical component designed to fit seamlessly with various Cummins engines, ensuring optimal performance and reliability. This plug is engineered to meet the stringent standards set by Cummins, providing a secure and leak-proof connection in engine systems.

Compatibility with 6C8.3 Engines

The 6C8.3 engine, known for its robust performance and durability, integrates the Threaded Plug 4990975 into its design. This plug is essential for maintaining the integrity of the engine’s fluid systems, ensuring that there are no leaks or pressure drops that could compromise engine efficiency.

Compatibility with QSM11 CM570 Engines

Similarly, the QSM11 CM570 engine benefits from the use of the Threaded Plug 4990975. This engine, designed for heavy-duty applications, relies on this plug to secure various fluid lines and connections. The precision engineering of the plug ensures that it fits perfectly, providing a reliable seal that is crucial for the engine’s operation.

Grouping of Engines

Both the 6C8.3 and QSM11 CM570 engines are part of Cummins’ lineup of high-performance engines. The Threaded Plug 4990975 is designed to be compatible with these engines, ensuring that they can operate efficiently and reliably. This compatibility is a testament to Cummins’ commitment to providing high-quality, interchangeable parts that enhance engine performance and longevity.

Role of Part 4990975 Threaded Plug in Engine Systems

The 4990975 Threaded Plug is an essential component in various engine systems, facilitating efficient operation and maintenance.

In the aftercooler system, the threaded plug is utilized to seal openings, ensuring that the cooling process is effective and that no air or fluid leaks occur. This contributes to maintaining the optimal temperature of the compressed air, which is vital for engine performance.

Within the turbocharger arrangement, the threaded plug plays a role in sealing connections and passages. It helps in maintaining the integrity of the turbocharger system by preventing any unwanted air or fluid flow that could disrupt the turbo’s operation.

In the oil cooler system, the threaded plug is employed to seal ports and passages, ensuring that the oil cooling process is efficient. This is important for maintaining the oil at the correct temperature, which is essential for lubricating engine components and preventing overheating.

During product installation, the threaded plug is often used to temporarily seal openings in various engine components. This ensures that the installation process is clean and that no contaminants enter the system before final assembly.

Conclusion

In summary, the 4990975 Threaded Plug is a versatile component that enhances the functionality and reliability of various engine systems by providing effective sealing solutions. Its role in maintaining system integrity, preventing leaks, and ensuring efficient operation makes it a critical part in the maintenance and operation of heavy-duty trucks.