3944141
Water Inlet Connection
Cummins®

The Water Inlet Connection 3944141, manufactured by Cummins, is a critical component in the engine cooling systems of heavy-duty trucks. This part facilitates the entry of coolant into the engine, ensuring optimal operating temperatures under various conditions ¹.

Basic Concepts of Water Inlet Connection

Water inlet connections in heavy-duty trucks are designed to regulate the flow of coolant into the engine. These connections are vital for the efficient operation of the engine cooling system, ensuring that coolant is distributed evenly throughout the engine block. Proper coolant flow is essential for preventing engine overheating, which can lead to reduced performance and potential damage ².

Purpose of the 3944141 Water Inlet Connection

The 3944141 Water Inlet Connection is designed to allow coolant to enter the engine in a controlled manner. By providing a secure and efficient pathway for coolant, this component helps to maintain the engine’s temperature within safe operating limits. Its design ensures that coolant is delivered directly to critical areas of the engine, enhancing cooling efficiency and protecting the engine from thermal stress ³.

Key Features

The 3944141 Water Inlet Connection is constructed from durable materials that can withstand the high temperatures and pressures within the engine cooling system. Its design includes precise connection types that ensure a secure fit with other components in the system. Unique attributes of this part, such as its robust construction and precise engineering, contribute to its performance and longevity in demanding operating conditions.

Benefits

The 3944141 Water Inlet Connection offers several advantages. It improves coolant flow within the engine, which enhances cooling efficiency and protects the engine from overheating. This component also contributes to increased reliability, ensuring that the engine cooling system operates effectively even under strenuous conditions.

Installation Process

Installing the 3944141 Water Inlet Connection requires careful preparation and the use of appropriate tools. It is important to follow a step-by-step process to ensure a secure and effective fit. This includes cleaning the installation area, using the correct torque specifications for fastening, and verifying that all connections are secure before operating the engine.

Maintenance Tips

To keep the 3944141 Water Inlet Connection in optimal condition, routine maintenance is recommended. This includes regular inspections for signs of wear or damage, cleaning the connection to remove any debris or buildup, and following manufacturer guidelines for replacement intervals. Proper maintenance ensures the longevity and efficiency of the component.

Troubleshooting Common Issues

Common issues with water inlet connections, such as leaks or blockages, can affect the performance of the engine cooling system. Identifying these problems early is important for maintaining engine health. Diagnostic steps may include visual inspections, pressure tests, and flow analysis. Repair solutions can range from tightening connections to replacing damaged components.

Cummins Overview

Cummins Inc. is a leader in the diesel engine manufacturing industry, with a history of innovation and quality. The company’s expertise in engine technology and commitment to excellence are reflected in its products, including the 3944141 Water Inlet Connection. Cummins’ focus on research and development ensures that its components meet the high demands of heavy-duty applications.

Water Inlet Connection Part 3944141 Compatibility with Cummins Engines

The Water Inlet Connection part number 3944141 is a critical component in the cooling system of various Cummins engines. This part is designed to facilitate the flow of coolant into the engine block, ensuring optimal thermal management and performance. Below is a detailed overview of the engines with which this part is compatible:

G8.3 Series

• G8.3
• G8.3 CM558
• GTA8.3 CM558

The G8.3 series engines, including the G8.3, G8.3 CM558, and GTA8.3 CM558, are designed for heavy-duty applications. The Water Inlet Connection part 3944141 is integral to these engines, providing a reliable interface for coolant flow.

ISC Series

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

The ISC series engines, such as the ISC CM2150, ISC CM554, ISC CM850, and ISC8.3 CM2250, are known for their versatility and robust performance. The Water Inlet Connection part 3944141 is essential for maintaining the cooling efficiency of these engines.

ISL Series

• ISL CM2150
• ISL CM554
• ISL9 CM2150 SN
• ISL9 CM2250

The ISL series engines, including the ISL CM2150, ISL CM554, ISL9 CM2150 SN, and ISL9 CM2250, are designed for both on-highway and off-highway applications. The Water Inlet Connection part 3944141 ensures that these engines operate within their optimal temperature range.

L8.9 Series

• L8.9
• L8.9 CM2670 L134C

The L8.9 series engines, such as the L8.9 and L8.9 CM2670 L134C, are engineered for high-performance applications. The Water Inlet Connection part 3944141 is a key component in these engines, ensuring efficient coolant circulation.

QSC Series

• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)
• QSC9 CM2250 / QSL9 CM2250

The QSC series engines, including the QSC8.3 CM554, QSC8.3 CM850 (CM2850), and QSC9 CM2250 / QSL9 CM2250, are designed for a variety of applications. The Water Inlet Connection part 3944141 is crucial for maintaining the cooling system’s integrity in these engines.

QSL Series

• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM554
• QSL9 CM850 (CM2850)
• QSL9 G CM558

The QSL series engines, such as the QSL8.9 CM2150 L141, QSL9 CM2250, QSL9 CM2350 L102, QSL9 CM554, QSL9 CM850 (CM2850), and QSL9 G CM558, are built for durability and efficiency. The Water Inlet Connection part 3944141 is a vital part of these engines, ensuring that the cooling system functions correctly.

Understanding the Role of Water Inlet Connection in Engine Systems

The water inlet connection, specifically part 3944141, is integral to the efficient operation of engine systems by facilitating the entry of coolant into the engine block. This component ensures that the coolant system maintains optimal pressure and flow, which is essential for the engine’s thermal management.

Integration with Key Engine Components

1. Engine Block: The water inlet connection interfaces directly with the engine block, allowing coolant to enter the water jackets. This setup ensures that the coolant circulates effectively around the cylinders and other critical areas, dissipating heat generated during combustion.

2. Thermostat Housing: Connected to the thermostat housing, part 3944141 allows for regulated coolant flow. The thermostat controls the temperature of the engine by opening and closing, which modulates the flow of coolant through the engine block based on the engine’s operating temperature.

3. Coolant Hoses: The water inlet connection is a critical junction point for various coolant hoses. These hoses transport coolant from the radiator to the engine and back, ensuring a continuous cycle of cooling. The secure fitting of these hoses to the water inlet is vital for maintaining system integrity and preventing leaks.

4. Radiator: By linking the engine block to the radiator, the water inlet connection plays a role in the overall coolant circulation loop. The radiator dissipates heat from the coolant, which is then recirculated back into the engine to absorb more heat.

5. Water Pump: The water inlet connection works in tandem with the water pump, which drives the circulation of coolant throughout the engine system. Efficient coolant flow is dependent on the proper function of this connection point.

6. Heater Core: In systems where the engine’s coolant also services the vehicle’s heating system, the water inlet connection ensures that coolant reaches the heater core. This allows for the transfer of heat into the vehicle’s interior, providing warmth to passengers.

Conclusion

In summary, the 3944141 Water Inlet Connection is a fundamental component that ensures the seamless operation of the engine’s cooling system. Its proper function is essential for maintaining engine temperature within safe operating ranges, thereby contributing to the longevity and performance of the engine.