4095783
Thermostat Seat
Cummins®

Introduction

The Cummins 4095783 Thermostat Seat is a critical component in the engine cooling systems of commercial trucks. It provides a secure mounting point for the thermostat, ensuring proper function and regulation of engine temperature. This part is essential for maintaining optimal engine operating conditions by facilitating the controlled flow of coolant through the engine ¹.

Function and Operation

The Thermostat Seat operates by creating a seal between the thermostat and the engine block. 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 temperature. The seat ensures a tight seal, which is vital for the efficient operation of the cooling system. It interacts directly with the thermostat, providing a stable platform that allows for precise control over coolant flow ².

Key Features

This Cummins part is characterized by its robust design and material composition. Constructed from high-quality materials, it is engineered to withstand the high temperatures and pressures present in diesel engines. Its design includes precise machining to ensure a perfect fit with the thermostat and engine block, contributing to its performance and durability. The material used is resistant to corrosion and wear, enhancing the part’s longevity in demanding applications ³.

Benefits

The Thermostat Seat offers several advantages. It contributes to improved engine temperature regulation, which is important for maintaining engine efficiency and preventing overheating. Its durable construction ensures reliable performance even in heavy-duty applications, reducing the likelihood of failures and the need for frequent replacements. Additionally, the precise design of the seat supports consistent coolant flow, which is important for the overall health and longevity of the engine cooling system.

Installation and Maintenance

Proper installation of the Thermostat Seat is important for ensuring optimal performance. It should be aligned correctly with the engine block and secured according to the manufacturer’s torque specifications to prevent leaks and ensure a tight seal. Regular maintenance, including inspection for wear or damage and ensuring the seat remains clean and free of debris, is recommended to maintain its effectiveness and prolong its service life.

Troubleshooting Common Issues

Common issues with thermostat seats may include leaks or malfunctions, often due to wear, improper installation, or debris accumulation. Diagnostic procedures should begin with a visual inspection for signs of damage or misalignment. If a leak is detected, the seat may need to be replaced or resealed. Ensuring the seat is clean and correctly installed can often resolve malfunctions.

Manufacturer Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes diesel and natural gas engines, as well as related technologies. With a history spanning over a century, Cummins has established itself as a leader in the diesel engine industry, known for its commitment to quality, innovation, and customer satisfaction. The company’s expertise in engine manufacturing is reflected in the design and performance of components like the Thermostat Seat.

Compatibility with Cummins Engines

The Thermostat Seat part number 4095783, manufactured by Cummins, is designed to fit seamlessly with a variety of Cummins engines, ensuring optimal thermal management and engine efficiency. This part is crucial in maintaining the engine’s operating temperature by facilitating the proper seating of the thermostat.

QSK23 Series

• QSK23 CM2250 K109
• QSK23 CM2350 K127

The QSK23 series engines, specifically the CM2250 K109 and CM2350 K127 variants, are engineered for robust performance in demanding applications. The Thermostat Seat 4095783 is engineered to fit these engines, ensuring that the thermostat operates correctly within the specified thermal range. This compatibility is critical for maintaining engine performance and longevity.

QSK23 CM500

The QSK23 CM500 engine is another variant where the Thermostat Seat 4095783 is applicable. This engine is designed for high-power output and efficiency, making it suitable for various industrial and commercial applications. The proper installation of the Thermostat Seat ensures that the engine’s thermostat functions as intended, contributing to the overall reliability and efficiency of the engine.

Grouping Engines for Compatibility

When considering the compatibility of the Thermostat Seat 4095783 across different engines, it is essential to recognize that the QSK23 series engines share common design principles and thermal management requirements. This commonality allows the same thermostat seat to be used across multiple models, simplifying maintenance and part replacement processes.

By ensuring that the Thermostat Seat 4095783 is correctly installed in these engines, operators can maintain the thermal integrity of the engine, preventing overheating and ensuring that the engine operates within its optimal temperature range. This compatibility is a testament to Cummins’ commitment to providing reliable and efficient engine components.

Role in Engine Systems

The 4095783 Thermostat Seat is an integral component in the thermal management system of an engine, working in conjunction with several other components to maintain optimal operating temperatures.

When the engine is cold, the thermostat seat interacts with the thermostat to prevent coolant flow to the radiator, allowing the engine to warm up quickly. As the engine temperature rises, the thermostat opens, and the thermostat seat ensures a proper seal is maintained to regulate coolant flow.

In systems equipped with a bypass valve, the thermostat seat plays a role in directing coolant flow when the thermostat is closed. The bypass valve allows coolant to circulate within the engine block, preventing overheating of specific engine components while the thermostat is still closed.

In engines with an oil cooler, the thermostat seat’s function becomes even more significant. The oil cooler relies on regulated coolant temperatures to effectively cool the engine oil. The thermostat seat ensures that the coolant reaching the oil cooler is at the correct temperature, allowing for efficient heat exchange between the coolant and the engine oil.

Furthermore, in systems where an engine oil cooler is present, the thermostat seat’s role extends to maintaining the efficiency of the oil cooling process. By ensuring that the coolant temperature is optimal, the thermostat seat indirectly contributes to the effective cooling of the engine oil, which is vital for the longevity and performance of the engine.

Conclusion

In summary, the 4095783 Thermostat Seat is a key component in the intricate dance of thermal management within an engine, working seamlessly with the thermostat, bypass valve, and oil cooler to maintain engine efficiency and longevity.