4975311
Threaded Plug
Cummins®

The Cummins 4975311 Threaded Plug is a component designed for use in commercial trucks. It serves a specific function within the truck’s mechanical systems, contributing to the overall maintenance and operational efficiency of the vehicle. Understanding its purpose and significance is key to ensuring the longevity and performance of commercial trucks.

Basic Concepts of Threaded Plugs

Threaded plugs are mechanical components used to seal openings or passages in various systems. They are screwed into place, creating a secure seal that prevents the escape of fluids or gases. In mechanical systems, threaded plugs play a role in maintaining system integrity by blocking off unused ports or passages, thus ensuring that the system operates as intended without leaks ¹.

Purpose of the Cummins 4975311 Threaded Plug

The Cummins 4975311 Threaded Plug is specifically designed to seal openings within a truck’s engine or other systems. Its application is crucial in scenarios where an opening needs to be temporarily or permanently sealed to prevent fluid leaks or to block off passages that are not in use. This plug helps maintain the system’s pressure and integrity, contributing to the efficient operation of the truck ².

Key Features

The Cummins 4975311 Threaded Plug is constructed from materials that offer durability and resistance to the harsh conditions found within a truck’s engine compartment. Its thread type is designed to ensure a secure fit, preventing leaks and maintaining system pressure. Unique design elements may include a tapered thread for a tighter seal or a specific shape that allows for easy installation and removal ³.

Benefits

Using the Cummins 4975311 Threaded Plug offers several benefits. It contributes to improved system integrity by effectively sealing openings, which helps prevent fluid leaks. This, in turn, can lead to enhanced engine efficiency and reduced maintenance costs. The plug’s durable construction ensures long-term reliability, making it a valuable component in the maintenance of commercial trucks.

Installation Process

Installing the Cummins 4975311 Threaded Plug requires careful attention to ensure a secure fit. The process involves cleaning the opening to be sealed, applying a thread sealant if necessary, and screwing the plug into place using the appropriate tools. It’s important to follow manufacturer guidelines to avoid over-tightening, which could damage the plug or the surrounding components.

Troubleshooting Common Issues

Common issues with threaded plugs include leaks around the plug or difficulty in removal. To address leaks, ensure the plug is properly seated and consider reapplying thread sealant. If removal is difficult, using a plug extractor tool can help. Regular inspection and maintenance can prevent many issues from arising.

Maintenance Tips

Regular maintenance of the Cummins 4975311 Threaded Plug includes periodic inspection for signs of wear or damage. Cleaning the plug and its surrounding area can prevent buildup that might affect its sealing capability. If significant wear is observed, or if the plug becomes damaged, replacement is recommended to maintain system integrity.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a broad product range and a strong reputation within the automotive and heavy-duty truck industry, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive history and expertise in engine technology underscore the reliability and performance of its components, including the Cummins 4975311 Threaded Plug.

Threaded Plug 4975311 Compatibility with Cummins Engines

The Cummins Threaded Plug part number 4975311 is designed to fit a variety of Cummins engines, ensuring compatibility across multiple models. This plug is a critical component in maintaining the integrity of the engine’s systems, particularly in areas where threaded connections are necessary.

D4.0 CM2620 D103B and F4.5 CM2620 F139B

These engines, both part of the CM2620 series, utilize the 4975311 threaded plug in their fuel systems. This plug is essential for sealing and securing connections, ensuring that fuel lines remain leak-free and operational.

ISX12 CM2350 X102 and QSK95 CM2350 K111/K113

The ISX12 CM2350 X102 and QSK95 CM2350 K111/K113 engines, both part of the CM2350 series, incorporate the 4975311 threaded plug in their cooling systems. This plug is crucial for maintaining coolant flow and preventing leaks, which is vital for engine performance and longevity.

ISX12 G CM2180 EJ and ISX12/ISX11.9 CM2250

These engines, part of the CM2180 and CM2250 series, respectively, use the 4975311 threaded plug in their lubrication systems. This plug ensures that oil lines are properly sealed, preventing oil leaks and maintaining the necessary lubrication for engine components.

ISZ13 CM2150 Z105 and QSZ13 CM2150 Z101/Z102

The ISZ13 CM2150 Z105 and QSZ13 CM2150 Z101/Z102 engines, both part of the CM2150 series, utilize the 4975311 threaded plug in their exhaust systems. This plug is essential for sealing exhaust connections, preventing leaks, and ensuring that the engine operates efficiently.

QSX11.9 CM2250 ECF

The QSX11.9 CM2250 ECF engine uses the 4975311 threaded plug in its fuel injection system. This plug is critical for maintaining the integrity of fuel connections, ensuring that the engine receives the proper fuel supply for optimal performance.

Z13 Z108G

The Z13 Z108G engine incorporates the 4975311 threaded plug in its cooling system. This plug is essential for sealing coolant connections, preventing leaks, and maintaining the necessary coolant flow for engine performance.

Role of Part 4975311 Threaded Plug in Engine Systems

The part 4975311 Threaded Plug is an essential component in various engine systems, ensuring the integrity and efficiency of the engine’s operation. In the context of the cooler, this threaded plug is utilized to seal off specific passages or ports, preventing the escape of coolant and maintaining the system’s pressure. This ensures that the cooling process remains effective, safeguarding the engine from overheating.

Within the engine oil system, the threaded plug plays a significant role in sealing off unused oil passages or ports. This helps in maintaining the proper flow of engine oil, ensuring that it reaches all necessary components without leakage. The plug’s sealing capability is vital for preserving the oil’s lubricating properties and preventing contamination.

In the filter system, particularly with the lubricating oil filter, the threaded plug is employed to seal off bypass or relief ports. This ensures that the filter operates within its designed parameters, effectively trapping contaminants and maintaining the cleanliness of the lubricating oil. A well-sealed filter system contributes to prolonged engine life and optimal performance.

The lubricating oil filter head also benefits from the use of the threaded plug. By sealing off specific areas, it ensures that the filter head functions correctly, maintaining the pressure and flow necessary for efficient filtration. This component is key in protecting the engine from wear and tear caused by impurities in the oil.

Lastly, in the oil filter cooler head, the threaded plug is used to seal off cooling passages. This ensures that the cooling process is efficient, maintaining the oil at an optimal temperature. Proper cooling of the lubricating oil is essential for reducing viscosity changes and ensuring consistent lubrication across varying operating conditions.

Overall, the part 4975311 Threaded Plug is a versatile component that enhances the functionality and reliability of various engine systems by providing essential sealing capabilities.

Conclusion

The Cummins 4975311 Threaded Plug is a critical component in the maintenance and operation of commercial trucks. Its role in sealing various engine systems ensures the integrity and efficiency of the vehicle’s mechanical systems. Understanding its purpose, features, and benefits can contribute to the longevity and performance of commercial trucks, making it a valuable asset in the industry.