651045
Grommet Seal
Cummins®

The 651045 Grommet Seal, a component manufactured by Cummins, is designed for use in commercial trucks. This article provides an overview of the Grommet Seal, its function, key features, benefits, and maintenance suggestions.

Understanding Grommet Seals

A grommet seal is a type of gasket used to prevent leaks and provide insulation between two or more parts. Typically made from rubber or silicone, it is designed to fit into a hole, creating a seal that prevents the passage of fluids or gases. Grommet seals are commonly used in automotive applications to protect wiring, tubing, and other components from environmental factors such as moisture, dirt, and vibration ¹.

Purpose of the 651045 Grommet Seal

This Cummins part plays a role in the truck’s system by providing a secure and leak-proof connection between components. It is used to seal openings where wires, hoses, or other elements pass through bulkheads, panels, or other barriers. This seal helps maintain the integrity of the truck’s systems by preventing the ingress of contaminants and the egress of fluids or gases ².

Key Features

• Made from durable materials to withstand harsh environmental conditions.
• Designed for a snug fit to ensure a reliable seal.
• Resistant to oils, fuels, and other chemicals commonly found in truck environments.
• Flexible enough to accommodate minor misalignments or movements ³.

Benefits

• Enhances the reliability of connections by preventing leaks.
• Protects internal components from moisture, dirt, and other contaminants.
• Reduces the risk of electrical shorts by insulating wires.
• Contributes to the overall durability and longevity of the truck’s systems ⁴.

Troubleshooting and Maintenance

Regular inspection of the 651045 is recommended to ensure it remains in good condition. Signs of wear, cracking, or deformation should be addressed promptly to prevent potential leaks or failures. Replacement of the seal should be performed according to the manufacturer’s guidelines 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 commitment to innovation and quality, Cummins serves commercial truck, engine, and powertrain markets, providing reliable and efficient solutions for a variety of applications.

Cummins Grommet Seal 651045 Compatibility

This part is a versatile component designed to fit a variety of Cummins engines. It is essential for maintaining the integrity of engine systems by preventing leaks and ensuring that various fluids and gases remain within their designated pathways.

K-Series Engines

The 651045 seal is compatible with several K-Series engines, including:

• K19
• K38
• K50

These engines are known for their robust performance and reliability, often used in heavy-duty applications.

L10 MECHANICAL

The L10 MECHANICAL engine also benefits from the 651045 seal, ensuring optimal sealing performance in this specific model.

M-Series Engines

The M11 series engines, both the M11 CELECT PLUS and M11 MECHANICAL, are designed to work seamlessly with the 651045 seal. This compatibility ensures that these engines maintain their efficiency and longevity.

N-Series Engines

The N14 MECHANICAL engine is another model that integrates well with the 651045 seal, providing a reliable sealing solution for this engine type.

NH/NT Series Engines

The NH/NT 855 engine is also compatible with the 651045 seal, ensuring that this engine operates with the necessary sealing integrity.

QSK Series Engines

The QSK19 CM500 engine is designed to use the 651045 seal, ensuring that it maintains its sealing effectiveness and operational efficiency.

QSN Series Engines

The QSNT14 CM876 N102 engine is another model that benefits from the 651045 seal, providing a reliable sealing solution for this engine type.

V-Series Engines

The V28 and V903 engines are compatible with the 651045 seal, ensuring that these engines maintain their sealing integrity and operational efficiency.

VTA Series Engines

The VTA903 CM2250 V105 engine also integrates well with the 651045 seal, providing a reliable sealing solution for this engine type.

Grommet Seal Component Usage in Engine Systems

The Grommet Seal, part number 651045, is an essential component in various engine systems, ensuring the integrity and efficiency of fluid and gas pathways. Its application spans across multiple components, each playing a distinct role in the overall engine performance.

Aftercooler Core

In the aftercooler core, the Grommet Seal is utilized to maintain a secure and leak-free connection between the core and its mounting points. This ensures that the cooling process of the compressed air is efficient, contributing to better engine performance and longevity.

Bypass Tube Mounting

For the bypass tube mounting, the Grommet Seal provides a robust seal that prevents any unwanted leaks or pressure drops. This is vital for maintaining the correct flow of fluids or gases through the bypass system, ensuring that the engine operates within optimal parameters.

Check Valve Assembly and Check Valve Fuel Supply

In both the check valve assembly and the check valve fuel supply, the Grommet Seal is employed to ensure that the valves function correctly without any leakage. This is important for maintaining the pressure and flow integrity of the fuel system, which is essential for consistent engine operation.

EBM Valve and Drain Cock

The Grommet Seal is also integral in the EBM (Electromagnetic Brake Modulator) valve and the drain cock. In these applications, it ensures that there are no leaks around the valve or cock, which could lead to system inefficiencies or contamination.

Fuel and Oil System Mountings

Across various fuel and oil system mountings, such as the fuel drain tube mounting, fuel pump conversion kit, and fuel supply tube, the Grommet Seal plays a key role. It ensures that all connections are secure, preventing leaks that could affect the engine’s fuel delivery and lubrication systems.

Hydro-Mechanical Step and Valve Timing Control

In the hydro-mechanical step and valve timing control systems, the Grommet Seal is used to maintain precise fluid dynamics. This is essential for the accurate operation of these systems, which directly influence engine performance and emissions.

Oil Control Valve Plumbing

For the oil control valve plumbing, the Grommet Seal ensures that the oil flow is consistent and leak-free. This is crucial for maintaining the proper lubrication of engine components, which is fundamental to engine health and performance.

Dual STC K38 and Left Bank Oil Control Connection

In the dual STC K38 and the left bank oil control connection, the Grommet Seal is used to ensure that the oil control systems operate efficiently. This helps in maintaining the correct oil pressure and flow, which is vital for the engine’s overall performance and durability.

Conclusion

The 651045 Grommet Seal is a versatile component that enhances the reliability and efficiency of various engine systems by providing secure and leak-free connections. Regular maintenance and inspection are crucial to ensure its continued effectiveness in maintaining the integrity of the engine systems.