3042401
Grommet Seal
Cummins®

The 3042401 Grommet Seal is a component manufactured by Cummins, 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 components. It is typically made from rubber or silicone and 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 3042401 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, ensuring that fluids or contaminants do not enter sensitive areas. This seal helps maintain the integrity of the truck’s systems and contributes to overall performance and reliability ².

Key Features

• Made from durable materials to withstand harsh operating conditions.
• Designed for a precise fit to ensure effective sealing.
• Resistant to oils, fuels, and other chemicals commonly found in truck environments.
• Provides electrical insulation where necessary.
• Easy to install and replace.

Benefits

• Enhances the longevity of connected components by protecting them from environmental damage.
• Reduces the risk of fluid leaks, which can lead to system failures.
• Improves the overall reliability and safety of the truck.
• Helps maintain optimal performance of electrical and fluid systems.

Troubleshooting and Maintenance

Regular inspection of the 3042401 Grommet Seal is recommended to ensure it remains in good condition. Signs of wear, cracking, or leakage should be addressed promptly. Maintenance tips include:

• Checking for proper seating and fit during routine inspections.
• Cleaning the area around the seal to prevent buildup of dirt or debris.
• Replacing the seal if it shows signs of damage or deterioration.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation for quality and reliability, Cummins serves commercial, industrial, and transportation markets worldwide.

Grommet Seal 3042401 Compatibility with Cummins Engines

The Grommet Seal part number 3042401 is designed to fit a variety of Cummins engines, ensuring a secure seal in various applications. Here’s how it integrates with different engine families:

ISM Series

• ISM CM570
• ISM CM570/870
• ISM CM876
• ISM11 CM876 SN

The ISM series engines benefit from the grommet seal in maintaining the integrity of the engine’s sealing system, particularly around critical areas where leaks could compromise performance.

ISX Series

• ISX CM570
• ISX CM870
• ISX CM871

The ISX series engines, known for their high performance and efficiency, utilize the grommet seal to prevent fluid leaks and maintain pressure within the engine’s systems.

L10 Series

• L10 CELECT
• L10 GAS
• L10 MECHANICAL

The L10 series engines, which are often used in a variety of applications, including construction and agricultural equipment, rely on the grommet seal to ensure that seals and gaskets remain effective over time.

M11 Series

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

The M11 series engines, designed for both on-highway and off-highway applications, use the grommet seal to maintain the sealing integrity of their systems, ensuring longevity and reliability.

N14 Series

• N14 CELECT
• N14 CELECT PLUS
• N14 MECHANICAL

The N14 series engines, which are often used in heavy-duty applications, benefit from the grommet seal in maintaining the sealing system’s effectiveness, crucial for high-performance and durability.

NH/NT 855

This engine model uses the grommet seal to ensure that the sealing system remains effective, preventing leaks and maintaining the engine’s operational integrity.

QSM11 Series

• QSM11 CM570

The QSM11 series engine utilizes the grommet seal to maintain sealing integrity, ensuring that the engine operates efficiently and reliably.

QSN14 Series

• QSN14 CM876 N103

The QSN14 series engine, designed for heavy-duty applications, relies on the grommet seal to maintain the sealing system’s effectiveness, crucial for high performance and durability.

Role of Part 3042401 Grommet Seal in Engine Systems

This part is instrumental in ensuring the integrity and efficiency of various engine systems. It is specifically designed to provide a secure and leak-proof seal in multiple applications within the engine assembly.

In the breather & filler system, the Grommet Seal prevents contaminants from entering the engine while allowing pressure to equalize. This is vital for maintaining clean oil and efficient engine operation.

Within the breather arrangement, the seal ensures that the breather system functions correctly by maintaining a proper seal around the breather components. This helps in managing crankcase pressure and preventing oil leaks.

The crankcase breather system relies on the Grommet Seal to keep the breather passages free from debris and moisture, which is essential for the longevity and performance of the crankcase.

In the cylinder block, the Grommet Seal is used to seal various passages and openings, ensuring that no oil or coolant can escape, which is fundamental for the block’s structural integrity and function.

For the valve and valve cover assemblies, the Grommet Seal provides a tight seal around the valve cover bolts and any passages, preventing oil leakage and ensuring that the valve train operates in a clean environment.

In the gear cover and gear cover assembly, the seal is critical for keeping gear lubricants contained and preventing external contaminants from entering the gear housing.

The oil pan and oil top level assembly pan utilize the Grommet Seal to ensure that oil remains within the pan and does not leak out, which is essential for maintaining proper oil levels and pressure.

For the rocker lever (top level assembly) cover and related components such as the rocker lever cover kit and rocker lever housing (top level assembly) cover, the Grommet Seal ensures that the rocker arm assembly is sealed effectively, preventing oil loss and contamination.

In gasket sets such as the lower engine gasket set, overhaul gasket set, single head gasket set, upper engine gasket kit, and upper engine gasket set, the Grommet Seal plays a role in ensuring that these gaskets form a complete seal, contributing to the overall integrity of the engine’s sealing system.

Finally, in the product installation package, the Grommet Seal is often included to ensure that all components are properly sealed during installation, facilitating a smooth and efficient assembly process.

Conclusion

The 3042401 Grommet Seal is a vital component in maintaining the integrity and efficiency of Cummins engines. Its durable construction, precise fit, and resistance to chemicals make it an essential part for preventing leaks and ensuring the longevity of engine systems. Regular maintenance and inspection of this part are crucial for the optimal performance and reliability of commercial trucks.