4938405
Air Intake Connection
Cummins®

Introduction

The Cummins 4938405 Air Intake Connection is a component designed for use in commercial trucks. It plays a role in the truck’s engine system, contributing to the overall performance and efficiency of the vehicle. Understanding its purpose and operation is important for maintaining and optimizing truck performance.

Basic Concepts of Air Intake Connection

An air intake connection is a part of the engine system that facilitates the flow of air into the engine. This component is important for the combustion process, as it ensures that the engine receives the necessary amount of air to mix with fuel for efficient burning. The air intake connection contributes to engine performance by maintaining the correct air-fuel ratio, which is vital for power output and fuel efficiency ¹.

Purpose of the 4938405 Air Intake Connection

The 4938405 Air Intake Connection plays a role in the air intake system by connecting various components within the system. It ensures a secure and efficient pathway for air to travel from the intake to the engine. This connection supports engine efficiency by maintaining a consistent airflow, which is necessary for optimal combustion and performance.

Key Features

The 4938405 Air Intake Connection is constructed from durable materials that are designed to withstand the rigors of commercial truck operation. Its design includes features that enhance its performance, such as a secure fitting mechanism that prevents leaks and ensures a tight seal. Additionally, the connection may have unique attributes that improve its resistance to wear and environmental factors.

Benefits

The 4938405 Air Intake Connection offers several benefits to truck operators. It contributes to improved engine performance by ensuring a reliable air supply to the engine. The component’s durable construction supports long-term use, reducing the need for frequent replacements. Additionally, the efficient design of the connection can lead to better fuel economy and reduced emissions ².

Installation Process

Installing the 4938405 Air Intake Connection requires following a series of steps to ensure a proper fit. The process may involve using specific tools to secure the connection in place. It is important to refer to the manufacturer’s guidelines for the exact installation procedure to ensure that the connection is installed correctly and functions as intended.

Maintenance Tips

To ensure the optimal performance and longevity of the 4938405 Air Intake Connection, regular maintenance is recommended. This includes inspecting the connection for signs of wear or damage and cleaning it as necessary to remove any debris that could affect its operation. Adhering to a maintenance schedule can help prevent issues and ensure the connection continues to function effectively.

Troubleshooting Common Issues

Common problems with the 4938405 Air Intake Connection may include leaks or a loose fit, which can affect engine performance. Troubleshooting these issues involves inspecting the connection for any visible signs of damage or wear and ensuring that it is securely fitted. If problems are detected, following the manufacturer’s recommended procedures for repair or replacement can resolve these issues.

Cummins Overview

Cummins Inc. is a well-established company in the automotive industry, known for its high-quality components and engines. With a strong reputation for reliability and performance, Cummins has a long history of innovation and commitment to producing parts that meet the demanding requirements of commercial vehicle operators.

Cummins Air Intake Connection Part 4938405 Compatibility

The Cummins Air Intake Connection part number 4938405 is designed to fit a range of Cummins engines, ensuring a secure and efficient air intake system. This part is integral to maintaining optimal engine performance across various models.

Compatible Engines

• 4B3.9
• 6B5.9
• B5.9 CM2670 B166C
• ISB5.9 CM2880 B127
• QSB3.9 CM2880 B138
• QSB5.9 CM2880 B139

The part 4938405 is engineered to seamlessly integrate with these engines, providing a reliable connection for the air intake system. It is important for ensuring that the engine receives the correct amount of air necessary for combustion, which is crucial for performance and efficiency.

Grouping of Compatible Engines

The engines listed can be grouped based on their specifications and intended applications:

• 4B3.9 and QSB3.9 CM2880 B138: These engines are typically used in smaller applications, such as compact equipment and light-duty vehicles.
• 6B5.9 and B5.9 CM2670 B166C: These engines are generally found in medium-duty applications, including larger machinery and mid-size vehicles.
• ISB5.9 CM2880 B127 and QSB5.9 CM2880 B139: These engines are designed for heavy-duty applications, such as large trucks and industrial equipment.

By ensuring compatibility with these diverse engines, the Cummins Air Intake Connection part 4938405 offers a versatile solution for maintaining the integrity of the air intake system across various engine types and applications.

Role of Part 4938405 Air Intake Connection in Engine Systems

The air intake connection, specifically part 4938405, serves as a vital link in the engine’s air induction system. This component facilitates the smooth transition of air from the air filter housing to the throttle body or intake manifold. Its primary function is to ensure a consistent and uninterrupted flow of air into the engine, which is essential for optimal combustion.

In conjunction with the air filter, part 4938405 helps maintain clean air intake by preventing contaminants from entering the engine. The connection is designed to withstand the pressures and temperatures within the intake system, ensuring durability and reliability.

Furthermore, the air intake connection plays a role in the engine’s performance tuning. By providing a sealed pathway for air, it helps maintain the correct air-fuel ratio, which is monitored by the engine control unit (ECU). This ensures that the engine operates efficiently and produces the desired power output.

In turbocharged engines, the air intake connection is particularly important as it must handle the increased air volume and pressure. It works in tandem with the intercooler, if present, to deliver cooled, dense air to the engine, enhancing performance and preventing overheating.

Overall, part 4938405 is an integral component that contributes to the engine’s overall efficiency, performance, and longevity by ensuring a reliable and consistent air supply.

Conclusion

The Cummins 4938405 Air Intake Connection is a critical component in the engine system of commercial trucks. Its role in ensuring a consistent and clean air supply to the engine is vital for optimal performance and efficiency. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part, ensuring long-term durability and reliability in various engine applications.