3921382
Water Inlet Connection
Cummins®

Introduction

The Water Inlet Connection 3921382 by Cummins is designed for commercial trucks, facilitating efficient coolant transfer into the engine cooling system. This component is essential for maintaining optimal engine temperature, contributing to performance and longevity ².

Basic Concepts of Water Inlet Connection

Water inlet connections are critical in engine cooling systems, serving as the entry point for coolant into the engine block. The coolant, a mixture of water and antifreeze, circulates to absorb heat, which is then dissipated through the radiator. This part ensures a steady and controlled flow of coolant, vital for effective engine cooling ¹.

Role of Water Inlet Connection in Truck Operation

The Water Inlet Connection 3921382 ensures even distribution of coolant into the engine block, maintaining consistent engine temperatures under varying conditions. This helps prevent overheating, reducing the risk of engine damage and ensuring efficiency ².

Key Features of Water Inlet Connection 3921382

Constructed with durable, corrosion-resistant materials, the Water Inlet Connection 3921382 is designed for long-term reliability. It features specific connection types compatible with Cummins engines, ensuring a secure and leak-free fit. Enhanced sealing mechanisms and specialized threading improve performance and ease of installation ².

Benefits of Using Water Inlet Connection 3921382

The Water Inlet Connection 3921382 offers improved coolant flow, essential for effective engine cooling. Its durable materials withstand the rigors of commercial truck operation, and its compatibility with Cummins engines ensures seamless integration into the cooling system, enhancing overall efficiency and reliability ².

Troubleshooting and Maintenance

Common issues with the Water Inlet Connection 3921382 include leaks or blockages, which can impede coolant flow. Diagnostic steps involve checking for wear or damage and ensuring secure connections. Regular maintenance, such as inspecting for leaks and replacing the part as needed, ensures the longevity and optimal performance of the cooling system ².

Compatibility with Cummins Engines

The Water Inlet Connection 3921382 is compatible with various Cummins engines, including:

ISB Series Engines

• ISB CM2150
• ISB CM550
• ISB CM850
• ISB5.9G CM2180
• ISB6.7 CM2250
• ISBE CM800

QSB Series Engines

• QSB3.9 30 CM550
• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)
• QSB5.9 30 CM550
• QSB5.9 44 CM550
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

B Series Engines

• B4.5
• B5.9 G
• B5.9 GAS PLUS CM556

4B and 6B Series Engines

• 4B3.9
• 6B5.9

This part ensures a secure and reliable connection for water inlet systems, optimizing engine performance across these models ².

Interaction with Key Components

The Water Inlet Connection 3921382 interfaces with several key components:

• Water Pump: Allows coolant to be drawn from the reservoir and circulated through the engine.
• Engine Block: Enables coolant to flow through the engine’s cooling passages, dissipating heat.
• Thermostat Housing: Regulates coolant flow based on engine temperature.
• Radiator Hoses: Links the engine to the radiator, ensuring coolant is cooled before recirculation.
• Coolant Reservoir: Part of the pathway that leads back to the reservoir, allowing for coolant expansion and contraction ².

Conclusion

The Water Inlet Connection 3921382 is a fundamental component in the engine cooling system, ensuring seamless integration and operation. Its durable construction, compatibility with various Cummins engines, and role in maintaining optimal engine temperature contribute to overall engine efficiency and reliability ².