3084879
Thermostat Seal
Cummins®

Introduction

The Cummins 3084879 Thermostat Seal is a component designed for use in commercial trucks, specifically within the engine’s cooling system. Its purpose is to ensure a secure and leak-free connection between the thermostat housing and the engine block. Cummins, a well-regarded manufacturer in the automotive industry, produces this seal as part of its range of high-quality engine components ¹.

Basic Concepts of a Thermostat Seal

A thermostat seal is a small but vital component in an engine’s cooling system. It functions by creating a tight seal between the thermostat housing and the engine block, preventing coolant leaks. This seal is important for maintaining the engine’s optimal operating temperature, which is crucial for engine efficiency and longevity ². By ensuring that the coolant circulates properly without leaks, the thermostat seal helps in regulating the engine temperature, thereby contributing to the overall performance and reliability of the engine.

Role of the 3084879 Thermostat Seal in Truck Operation

The Cummins 3084879 Thermostat Seal plays a specific role in the operation of a truck by facilitating the proper function of the engine’s cooling system. This seal ensures that the connection between the thermostat housing and the engine block is secure, which is important for maintaining the engine’s temperature within the desired range. A well-maintained seal contributes to engine efficiency by ensuring that the coolant system operates without leaks, thereby supporting consistent engine performance and reducing the risk of overheating ³.

Key Features

The Cummins 3084879 Thermostat Seal is characterized by several key features that enhance its functionality and durability. It is made from high-quality materials that are resistant to the harsh conditions within an engine, such as high temperatures and pressure. The design of the seal is tailored to fit precisely within the engine’s cooling system, ensuring a tight and reliable seal. Additionally, the seal may feature unique attributes such as reinforced edges or specialized coatings to further enhance its performance and longevity.

Benefits

Using the Cummins 3084879 Thermostat Seal offers several benefits. It contributes to improved engine performance by ensuring that the cooling system operates efficiently without leaks. The seal’s durable construction and precise fit help in maintaining engine temperature, which is important for engine efficiency and longevity. Fleet operators may also experience potential cost savings due to the seal’s durability and reliability, reducing the need for frequent replacements and repairs ⁴.

Troubleshooting and Maintenance

Common issues with thermostat seals may include leaks or failure due to wear and tear. Regular maintenance practices, such as inspecting the seal during routine engine checks and replacing it as needed, can help ensure optimal performance. If a leak is detected, it is important to address the issue promptly by replacing the seal to prevent further damage to the engine. Following the manufacturer’s guidelines for maintenance and replacement can help in troubleshooting and resolving issues related to the thermostat seal.

About Cummins

Cummins is a reputable manufacturer with a long history in the automotive industry. Known for its commitment to producing high-quality engine components, Cummins has established a strong reputation for reliability and performance. The company’s focus on innovation and quality ensures that its products, including the 3084879 Thermostat Seal, meet the demanding requirements of commercial truck engines.

Compatibility with Cummins Engines

The Thermostat Seal part number 3084879, manufactured by Cummins, is designed to fit a variety of Cummins engines. This seal is crucial for maintaining the integrity of the engine’s cooling system by preventing leaks at the thermostat housing. Below is a detailed description of its compatibility across different engine models.

ISM Series Engines

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

The ISM series engines, including the ISM CM570, ISM CM570/870, ISM CM876, and ISM11 CM876 SN, are designed for heavy-duty applications. The Thermostat Seal 3084879 is compatible with these engines, ensuring a secure fit that prevents coolant leaks, which is essential for maintaining optimal engine temperature.

ISX Series Engines

• ISX CM570
• ISX CM870
• ISX CM871
• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

The ISX series engines, such as the ISX CM570, ISX CM870, ISX CM871, and others, are known for their high performance and reliability. The Thermostat Seal 3084879 is engineered to fit these engines, providing a reliable seal that is critical for the engine’s cooling system.

ISZ Series Engines

• ISZ13 CM2150 Z105

The ISZ13 CM2150 Z105 engine is designed for applications requiring a balance of power and efficiency. The Thermostat Seal 3084879 is compatible with this engine, ensuring that the cooling system operates without leaks.

L10 Series Engines

• L10 CELECT
• L10 GAS
• L10 MECHANICAL

The L10 series engines, including the L10 CELECT, L10 GAS, and L10 MECHANICAL, are used in a variety of applications. The Thermostat Seal 3084879 fits these engines, providing a reliable seal that is essential for maintaining the engine’s cooling system.

M11 Series Engines

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

The M11 series engines, such as the M11 CELECT, M11 CELECT PLUS, and M11 MECHANICAL, are designed for medium-duty applications. The Thermostat Seal 3084879 is compatible with these engines, ensuring a secure fit that prevents leaks.

QSM11 Series Engines

• QSM11 CM570
• QSM11 CM876

The QSM11 series engines, including the QSM11 CM570 and QSM11 CM876, are known for their durability and efficiency. The Thermostat Seal 3084879 is designed to fit these engines, providing a reliable seal that is essential for the engine’s cooling system.

QSX11.9 and QSX15 Series Engines

• QSX11.9 CM2250 ECF
• QSX15 CM2250
• QSX15 CM2250 ECF

The QSX11.9 and QSX15 series engines, such as the QSX11.9 CM2250 ECF and QSX15 CM2250, are designed for high-performance applications. The Thermostat Seal 3084879 is compatible with these engines, ensuring a secure fit that prevents leaks, which is crucial for maintaining the engine’s cooling system.

Understanding the Role of Part 3084879 Thermostat Seal in Engine Systems

The part 3084879 Thermostat Seal is an essential component that ensures the proper functioning of various engine systems by maintaining the integrity of the thermostat housing and its associated components. This seal plays a significant role in the following areas:

Integration with Thermostat Housing

The Thermostat Seal is designed to fit precisely within the thermostat housing, creating a secure barrier that prevents coolant leaks. This seal is positioned between the thermostat housing and the engine block, ensuring that the coolant remains contained within the cooling system.

Collaboration with Thermostat

When the thermostat opens to allow coolant flow, the Thermostat Seal ensures that no coolant escapes from the housing. This maintains consistent coolant levels and supports the thermostat’s role in regulating engine temperature.

Support for Lower and Upper Engine Gasket Kits

The seal works in conjunction with the lower and upper engine gasket kits to provide a comprehensive sealing solution. By ensuring a tight fit between the thermostat housing and the engine block, the seal complements the gaskets’ function, contributing to overall system reliability.

Enhancement of Product Installation Package

Incorporating the Thermostat Seal into the product installation package ensures that all components work harmoniously. This seal is a vital part of the installation process, guaranteeing that the thermostat housing arrangement is correctly assembled and sealed.

Contribution to Thermostat Housing Cover and Top-Level Assembly

The seal is integral to the thermostat housing cover and the top-level assembly housing. It ensures that these components are securely sealed, preventing any coolant loss and maintaining the efficiency of the cooling system.

Role in Thermostat Top-Level Assembly Housing

Within the thermostat top-level assembly housing, the seal plays a key part in maintaining the structural integrity of the assembly. It ensures that all connections are leak-free, supporting the housing’s function in managing coolant flow.

By understanding the role of the part 3084879 Thermostat Seal in these components, engineers and mechanics can appreciate its importance in maintaining the efficiency and reliability of engine systems.

Conclusion

The Cummins 3084879 Thermostat Seal is a critical component in the engine’s cooling system, ensuring a secure and leak-free connection between the thermostat housing and the engine block. Its role in maintaining optimal engine temperature, contributing to engine efficiency, and supporting the overall performance and reliability of the engine cannot be overstated. Regular maintenance and timely replacement of this part are essential for the longevity and efficiency of commercial truck engines.