3627961
Thermostat Seal
Cummins®

Introduction

The Cummins 3627961 Thermostat Seal is a critical component designed for use in heavy-duty trucks. It plays a vital role within the engine’s cooling system, contributing to the overall operation and efficiency of the vehicle. Cummins, a reputable manufacturer in the automotive industry, produces this seal as part of their range of high-quality components aimed at enhancing vehicle performance and reliability.

Basic Concepts of Thermostat Seals

A thermostat seal is a component that facilitates the operation of an engine’s cooling system. It is positioned to create a secure barrier, preventing coolant leakage while allowing the thermostat to function correctly. The seal plays a role in maintaining engine temperature by ensuring that the thermostat can open and close as needed, regulating the flow of coolant through the engine. This regulation is vital for optimal engine performance and longevity ¹.

Role of the 3627961 Thermostat Seal in Truck Operation

The Cummins 3627961 Thermostat Seal is integral to the operation of heavy-duty trucks. It ensures a tight seal around the thermostat, which is crucial for the efficient operation of the engine’s cooling system. By maintaining a secure seal, the thermostat can effectively regulate engine temperature, contributing to engine efficiency and performance. This seal helps in preventing coolant loss, which could lead to engine overheating and potential damage ².

Key Features

The Cummins 3627961 Thermostat Seal is characterized by its durable material composition and precise design. It is crafted from high-quality materials to withstand the harsh conditions within an engine environment. The seal’s design attributes include a snug fit that ensures a reliable seal, contributing to its functionality and effectiveness in the cooling system. These features enhance the seal’s ability to perform under varying engine temperatures and pressures ³.

Benefits

Utilizing the Cummins 3627961 Thermostat Seal offers several advantages. It contributes to improved engine performance by ensuring efficient coolant flow and temperature regulation. The seal’s durability and reliability enhance the engine’s longevity, reducing the need for frequent replacements. These benefits collectively contribute to the overall operation and efficiency of heavy-duty trucks, making the seal a valuable component in the engine’s cooling system.

Troubleshooting and Maintenance

Common issues with thermostat seals may include leaks or failure to create a secure seal, potentially leading to engine overheating. Troubleshooting these problems involves inspecting the seal for signs of wear or damage and ensuring it is correctly installed. Regular maintenance, such as checking the seal during routine engine inspections, can help ensure its longevity and effectiveness. Proper installation and care are key to maintaining the seal’s performance and preventing engine issues.

About Cummins

Cummins is a renowned manufacturer in the automotive industry, known for its commitment to producing high-quality components. With a strong reputation for reliability and performance, Cummins components are designed to meet the demanding requirements of heavy-duty applications. The company’s dedication to quality and innovation ensures that their products, including the 3627961 Thermostat Seal, contribute to the efficient and reliable operation of vehicles.

Thermostat Seal Compatibility with Cummins Engines

The Thermostat Seal part number 3627961, manufactured by Cummins, is designed to fit a variety of engine models. Below is a detailed description of its compatibility across different engine types:

QSK Series Engines

• QSK38 CM558
• QSK38 CM2150 MCRS
• QSK38 CM850 MCRS
• QSK45 CM500
• QSK50 CM2150 K107
• QSK50 CM2150 MCRS
• QSK50 CM2350 K108
• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60 G CM2358 K110
• QSK60G
• QSK78 CM500
• QSK95 CM2350 K111
• QSK95 CM2350 K113

The Thermostat Seal 3627961 is compatible with the QSK series engines, which include various configurations such as CM558, CM2150, CM850, and others. These engines are known for their robust design and are often used in heavy-duty applications.

QST Series Engines

• QST30 CM2350 T101
• QST30 CM552

The Thermostat Seal is also suitable for the QST30 series engines, which include the CM2350 T101 and CM552 configurations. These engines are typically used in medium-duty applications.

QSV and QSW Series Engines

• QSV81G
• QSV91G
• QSW/QSV82
• QSW27
• QSW36
• QSW73

The Thermostat Seal 3627961 fits various models in the QSV and QSW series, including QSV81G, QSV91G, QSW/QSV82, QSW27, QSW36, and QSW73. These engines are generally used in a range of applications, from medium to heavy-duty.

Compatibility Summary

The Thermostat Seal 3627961 is engineered to provide a reliable seal for the thermostat housing in a variety of Cummins engines. Its compatibility spans across multiple series, including QSK, QST, QSV, and QSW, ensuring it can be used in a wide range of engine configurations. This makes it a versatile component for maintaining the integrity of the cooling system in these engines.

Understanding the Role of Part 3627961 Thermostat Seal in Engine Systems

Part 3627961, the thermostat seal, is an essential component in maintaining the integrity and efficiency of various engine systems. Its primary function is to ensure a secure and leak-free connection between the thermostat and other critical components within the engine’s cooling and oil systems.

Integration with Cooling Systems

In the auxiliary cooling system, the thermostat seal plays a significant role by preventing coolant leaks at the connection points between the thermostat and the thermostat housing assembly. This ensures that the coolant circulates efficiently, maintaining optimal engine temperature.

When dealing with a cooling system gasket kit or a cooling system gasket set, the thermostat seal complements these components by providing an additional layer of security against leaks. It works in tandem with the gaskets to ensure that the cooling system remains pressurized and functions correctly.

The water outlet is another area where the thermostat seal is vital. It ensures that the connection between the thermostat and the water outlet is tight, preventing any coolant escape and ensuring that the coolant flow is directed properly throughout the engine.

Role in Oil Cooling Systems

In the engine oil assembly cooler and engine oil cooler arrangement, the thermostat seal is instrumental in maintaining the integrity of the oil cooling process. By sealing the connection between the thermostat and the thermostat housing and support assembly, it prevents oil leaks and ensures that the oil remains cool, enhancing engine performance and longevity.

The oil assembly cooler and oil cooler also benefit from the thermostat seal. It ensures that the thermostat housing, whether it is the thermostat l b housing or thermostat r b housing, remains leak-free. This is essential for maintaining the efficiency of the oil cooling system and protecting the engine from overheating.

Supporting Thermostat Housing Components

The thermostat seal is a key component in the housing assembly thermostat, thermostat housing cover, thermostat housing mounting, and thermostat housing plumbing. It ensures that these housing components are securely sealed, preventing any fluid leaks and maintaining the overall efficiency of the thermostat system.

In the thermostat top level assembly housing and thermostat and support housing, the seal plays a vital role in ensuring that the thermostat is properly installed and functions as intended. This is particularly important in maintaining the correct engine temperature and ensuring that the thermostat can open and close as needed.

Comprehensive Service and Lower Engine Gasket Kits

In a service kit or lower engine gasket kit, the thermostat seal is often included to ensure that all connections within the engine’s cooling and oil systems are secure. This is essential for comprehensive engine maintenance and repair, ensuring that the engine operates efficiently and reliably.

Marine Engine Applications

For the marine upper engine gasket set, the thermostat seal is equally important. It ensures that the thermostat housing, whether it is part of the thermostat housing arrangement or thermostat housing cover, remains sealed in the challenging environments encountered in marine applications. This is vital for the durability and performance of marine engines.

On Board Spares and Hardware Kits

In on board spares and hardware kits, the thermostat seal is a valuable component. It allows for quick and effective repairs, ensuring that the engine can be maintained in optimal condition without prolonged downtime.

Conclusion

In summary, part 3627961 thermostat seal is a fundamental component in various engine systems, ensuring secure and leak-free connections between the thermostat and other critical components. Its role in maintaining the efficiency and reliability of cooling and oil systems cannot be overstated.