3905351
Grommet Seal
Cummins®

The Cummins 3905351 Grommet Seal is a component designed for use in commercial trucks. Its primary function is to provide a secure and leak-proof seal in various applications within the truck’s systems. This seal is integral to maintaining the integrity of fluid systems and protecting cables and wires from environmental damage.

Basic Concepts of Grommet Seals

Grommet seals are devices used in machinery to seal openings through which cables, wires, or fluid lines pass. They serve to prevent leaks, protect the integrity of the cables and wires, and shield them from environmental factors such as moisture, dust, and debris. Grommet seals work by creating a tight fit around the passing components, ensuring that no fluids can escape and that external contaminants cannot enter ¹.

Purpose of the 3905351 Grommet Seal

The Cummins 3905351 Grommet Seal plays a specific role in the operation of a truck. It is typically located in areas where cables, wires, or fluid lines pass through bulkheads, panels, or other barriers. This seal interacts with various systems within the truck, including electrical, hydraulic, and fuel systems, to ensure that these systems operate efficiently and without leaks ².

Key Features

The Cummins 3905351 Grommet Seal is characterized by several key features that enhance its performance. It is made from durable materials that can withstand the harsh conditions found in commercial truck environments. The design of the seal ensures a tight fit around the components it protects, and it may include unique attributes such as reinforced edges or specialized coatings to improve its durability and effectiveness ³.

Benefits

The Cummins 3905351 Grommet Seal offers several benefits. Its durable construction contributes to improved longevity and reliability. The seal provides enhanced protection against environmental factors, which helps to maintain the integrity of the systems it serves. Additionally, by preventing leaks and protecting cables and wires, the seal contributes to the overall efficiency and reliability of the truck ⁴.

Troubleshooting and Maintenance

Common issues with grommet seals may include wear, cracking, or displacement. To troubleshoot these issues, it is important to inspect the seal regularly for signs of damage or deterioration. Maintenance practices for the Cummins 3905351 Grommet Seal include cleaning the area around the seal to prevent buildup of dirt and debris, and replacing the seal if it shows signs of wear or damage. Proper maintenance ensures the longevity and effectiveness of the seal .

Compatibility with Cummins Engines

The Grommet Seal, identified by part number 3905351, is a critical component in ensuring the integrity and performance of various Cummins engines. This part is designed to fit seamlessly within the engine architecture, providing a vital seal that prevents leaks and maintains system pressure.

Compatibility with Specific Engine Models

• 4B3.9, 6B5.9, B4.5, ISB CM550, ISC CM554, QSB5.9 44 CM550, and QSC8.3 CM554

The 3905351 Grommet Seal is engineered to fit these engines, ensuring a snug and reliable seal where it is installed. This compatibility extends across a range of Cummins engine models, indicating the versatility and robustness of the part.

Grouping of Compatible Engines

• 4B3.9 and 6B5.9

These engines, part of the B-Series family, are known for their durability and efficiency. The 3905351 Grommet Seal is designed to integrate perfectly with these models, providing essential sealing where needed.

• B4.5

The B4.5 engine benefits from the 3905351 Grommet Seal, which helps maintain the engine’s operational integrity by preventing unwanted leaks.

• ISB CM550 and ISC CM554

Both the ISB CM550 and ISC CM554 engines are equipped with the 3905351 Grommet Seal, ensuring that these high-performance engines operate at peak efficiency.

• QSB5.9 44 CM550 and QSC8.3 CM554

These engines, part of the QSB and QSC series, also utilize the 3905351 Grommet Seal. This part is crucial in maintaining the seal’s integrity, which is essential for the proper functioning of these engines.

The 3905351 Grommet Seal’s compatibility with these engines underscores its importance in maintaining engine performance and reliability.

Role of the 3905351 Grommet Seal in Engine Systems

The 3905351 Grommet Seal is an essential component in ensuring the integrity and efficiency of various engine systems. It is strategically employed in several key areas to prevent leaks, maintain pressure, and protect sensitive components from contaminants.

Fuel System Applications

In the fuel system, the 3905351 Grommet Seal is utilized to secure connections between the fuel pump and the fuel supply tube. This seal ensures that fuel is delivered efficiently without any loss due to leaks. Additionally, it is employed in the fuel filter plumbing to maintain a tight seal, preventing fuel from escaping and ensuring that the filter operates under optimal conditions.

Plumbing and Connections

The Grommet Seal plays a significant role in the overall plumbing of the engine. It is used in the connections between the fuel drain tube and the fuel drain tube kit, ensuring that any excess fuel is properly directed away from the engine compartment. In the fuel pump conversion kit, the seal is critical for adapting older fuel systems to newer pumps, maintaining a secure fit and reliable operation.

Filter and Transfer Applications

When it comes to filters, the 3905351 Grommet Seal is used in both the fuel filter and the fuel filter fuel connections. This ensures that the filter housing remains sealed, preventing any bypass of unfiltered fuel. In fuel transfer applications, the seal is employed to connect the injector fuel supply tube, guaranteeing that fuel is delivered to the injectors without any pressure drop or leakage.

Accessories and Additional Uses

Beyond the fuel system, the Grommet Seal is also found in various accessories and additional engine components. It is used in the connections for fuel plumbing, ensuring that all fuel lines are securely attached and leak-free. This seal is also integral in the pump and fuel transfer systems, where it helps maintain the integrity of the fuel delivery process from the pump to the injectors.

Conclusion

In summary, the 3905351 Grommet Seal is a versatile component that enhances the performance and reliability of engine systems by ensuring secure, leak-free connections across a variety of applications. Its compatibility with a wide range of Cummins engines underscores its importance in maintaining engine performance and reliability.