4975495
Thermostat Housing
Cummins®

The 4975495 Thermostat Housing, manufactured by Cummins, is a critical component in the engine cooling system of heavy-duty trucks. This part ensures that the engine operates within optimal temperature ranges, contributing to engine efficiency and longevity. Understanding its function and significance is essential for fleet operators and technicians.

Basic Concepts of Thermostat Housing

A thermostat housing is a component that encloses the thermostat within an engine’s cooling system. Its primary role is to direct the flow of coolant based on temperature readings from the thermostat. When the engine is cold, the thermostat remains closed, preventing coolant from flowing through the radiator. As the engine warms up, the thermostat opens, allowing coolant to circulate and regulate the engine temperature. The housing also provides a secure mounting point for the thermostat and connects to coolant passages within the engine ¹.

Purpose of the 4975495 Thermostat Housing

The 4975495 Thermostat Housing regulates coolant flow to ensure the engine reaches and maintains its optimal operating temperature. This is important for efficient combustion and reduced emissions. By controlling the flow of coolant, the housing helps prevent the engine from overheating or running too cold, both of which can lead to decreased performance and potential damage ².

Key Features

This Cummins part is designed with specific characteristics that enhance its performance and durability in heavy-duty applications. It is constructed from high-quality materials that can withstand the high temperatures and pressures present in truck engines. The housing is engineered to provide a precise fit and secure seal, ensuring that coolant flows efficiently through the system. Additionally, its design allows for easy installation and maintenance, reducing downtime for fleet operators ³.

Benefits

The advantages of using the 4975495 Thermostat Housing include improved engine efficiency, reliable temperature control, and long-term cost savings for fleet operators. By ensuring that the engine operates within its optimal temperature range, the housing contributes to better fuel efficiency and reduced wear on engine components. Reliable temperature control also helps extend the lifespan of the engine and other cooling system components, leading to lower maintenance costs over time.

Installation Considerations

Proper installation of the 4975495 Thermostat Housing is important to ensure optimal performance and longevity. Technicians should follow manufacturer guidelines to ensure a secure fit and proper sealing. This includes using the correct gaskets and sealants, torquing fasteners to the specified levels, and verifying that all connections are tight and free from leaks. Careful installation helps prevent coolant leaks and ensures that the housing functions as intended.

Troubleshooting and Maintenance

Common issues associated with thermostat housings include leaks, corrosion, and thermostat malfunction. Diagnostic tips for identifying problems include checking for coolant leaks around the housing, inspecting the housing for signs of corrosion or damage, and verifying that the thermostat is opening and closing as expected. Regular maintenance routines, such as inspecting the housing during routine service intervals and replacing worn or damaged components, can help prevent failures and extend the component’s service life.

Cummins: Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and related components. With a history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the heavy-duty truck industry. The company’s product range includes engines and components designed to meet the demanding requirements of heavy-duty applications, ensuring optimal performance and durability.

Thermostat Housing Compatibility with Cummins Engines

The Thermostat Housing part number 4975495, manufactured by Cummins, is designed to fit seamlessly with specific engine models. This part is integral to maintaining the optimal operating temperature of the engine by regulating the flow of coolant. Below is a detailed description of its compatibility with the listed engines:

QST30 CM2350 T101 and QST30 CM552

The Thermostat Housing part 4975495 is specifically engineered to fit the QST30 CM2350 T101 and QST30 CM552 engines. These engines are part of the Cummins QST30 series, which is known for its robust performance and reliability in various industrial applications. The housing ensures that the coolant flows efficiently through the engine, preventing overheating and maintaining the engine’s performance.

The design of the Thermostat Housing is tailored to the unique requirements of these engines, ensuring a precise fit and optimal functionality. This compatibility is crucial for maintaining the engine’s efficiency and longevity, as the correct installation of the thermostat housing directly impacts the engine’s cooling system.

By using the part number 4975495, technicians and operators can be confident that the thermostat housing will integrate smoothly with the QST30 CM2350 T101 and QST30 CM552 engines, providing reliable performance and ease of maintenance.

Understanding the Integration of Part 4975495 Thermostat Housing in Engine Systems

The part 4975495, known as the thermostat housing, is a critical component in the thermal management system of an engine. Its primary role is to house the thermostat, which regulates the flow of coolant to the engine. This regulation ensures that the engine operates within its optimal temperature range, enhancing performance and longevity.

Interaction with Key Components

1. Thermostat: The thermostat is the core element within the thermostat housing. It opens and closes in response to the coolant temperature, controlling the flow of coolant into the engine. The housing provides a secure environment for the thermostat, protecting it from external contaminants and ensuring its accurate operation.

2. Coolant Passages: The thermostat housing is designed with precise coolant passages that connect to the engine block and the radiator. These passages facilitate the smooth flow of coolant, which is vital for maintaining the engine’s temperature. The housing ensures that the coolant circulates efficiently, preventing hotspots and ensuring uniform cooling.

3. Sensor Mounting Points: Modern thermostat housings often include mounting points for temperature sensors. These sensors provide real-time data to the engine control unit (ECU), allowing for precise monitoring and adjustment of the engine’s temperature. The housing’s design ensures that these sensors are accurately positioned for optimal performance.

4. Sealing Surfaces: The housing features sealing surfaces that interface with the engine block and other components. These seals are critical for preventing coolant leaks, which could lead to engine overheating and potential damage. The housing’s design ensures a tight and durable seal, contributing to the overall reliability of the cooling system.

5. Integration with Top-Level Assembly: In many engine systems, the thermostat housing is part of a top-level assembly that includes additional components such as the water pump and radiator connections. This integration streamlines the installation process and enhances the overall efficiency of the cooling system. The housing’s design allows for seamless connection to these components, ensuring a cohesive and functional assembly.

6. Product Installation Considerations: During installation, the thermostat housing must be correctly aligned with the engine block and other components. Proper torque specifications must be followed to ensure secure fastening without over-tightening, which could damage the housing or seals. The housing’s design often includes features such as alignment pins or tabs to facilitate accurate installation.

Conclusion

The 4975495 Thermostat Housing plays a significant role in the thermal management of engine systems. Its integration with the thermostat, coolant passages, sensors, sealing surfaces, and top-level assembly ensures efficient and reliable operation of the engine’s cooling system. Proper installation and maintenance of this part are essential for maintaining engine efficiency and longevity.