3924990
Air Intake Connection
Cummins®

The Cummins 3924990 Air Intake Connection is a component designed to facilitate the intake of air into the engine of heavy-duty trucks. Its role is significant in ensuring that the engine receives the necessary airflow for efficient combustion and overall performance.

Basic Concepts of Air Intake Connection

Air intake connections in diesel engines are designed to ensure efficient airflow to the engine. These components play a role in directing clean, filtered air into the engine, which is necessary for the combustion process. Proper airflow is vital for maintaining engine efficiency and performance ¹.

Purpose of the 3924990 Air Intake Connection

The 3924990 Air Intake Connection is specifically designed to facilitate the intake of air necessary for combustion in the truck’s engine system. It connects the air filter to the turbocharger or engine intake tract, ensuring a smooth and uninterrupted flow of air. This component helps maintain the engine’s performance by providing a consistent supply of clean air.

Key Features

The 3924990 Air Intake Connection features a robust design that includes high-quality materials to ensure durability and performance. It is constructed from materials that can withstand the harsh conditions of heavy-duty truck environments. Unique attributes such as precise engineering and secure fitting mechanisms enhance its performance and longevity.

Benefits

The 3924990 Air Intake Connection offers several advantages. It contributes to improved engine performance by ensuring a consistent supply of clean air. This can lead to increased fuel efficiency as the engine operates more effectively. Additionally, the durable construction of the connection enhances its longevity, reducing the need for frequent replacements.

Installation Process

Installing the 3924990 Air Intake Connection involves several steps to ensure proper fitting and function. Begin by disconnecting the battery to prevent any electrical issues. Remove the old connection if present, ensuring all mounting brackets are clean and free of debris. Align the new connection with the mounting points, secure it in place, and reconnect any necessary hoses or tubes. Finally, reattach the battery and test the system for proper operation.

Maintenance Tips

Regular maintenance of the 3924990 Air Intake Connection is important for ensuring its longevity and optimal performance. Inspect the connection regularly for signs of wear or damage. Clean the connection and surrounding areas to prevent the buildup of dirt or debris that could affect airflow. Follow the manufacturer’s recommended inspection intervals and perform any necessary cleaning or repairs promptly.

Troubleshooting Common Issues

Common issues with the 3924990 Air Intake Connection may include leaks or blockages. To address these problems, first, inspect the connection for any visible damage or loose fittings. Ensure that all hoses and tubes are securely connected. If a leak is detected, tighten the connections or replace any damaged components. For blockages, clean the connection and ensure that the air filter is not obstructed.

Compatibility and Applications

The 3924990 Air Intake Connection is designed for specific types of engines and truck models. It is important to verify compatibility with the engine and truck model to ensure proper fit and function. Application notes provided by the manufacturer can offer additional guidance on suitable uses.

Safety Considerations

When working with the 3924990 Air Intake Connection, it is important to observe safety guidelines and precautions. Ensure the engine is off and the battery is disconnected before beginning any work. Use appropriate personal protective equipment, such as gloves and safety glasses, to protect against injury. Follow all manufacturer instructions and safety recommendations during handling and installation.

Cummins Overview

Cummins Inc. is a leading manufacturer in the heavy-duty truck industry, known for its wide range of diesel engines and related components. With a history of innovation and quality, Cummins products are designed to meet the demanding requirements of heavy-duty applications. The company’s reputation for reliability and performance makes it a preferred choice among truck manufacturers and operators.

Air Intake Connection Part 3924990 Compatibility with Cummins Engines

The Air Intake Connection part 3924990, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part plays a role in the engine’s air intake system, ensuring that air is properly directed into the engine for optimal performance.

Compatible Engines

• 4B3.9
• 6B5.9
• B4.5
• ISB CM550
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B140
• ISB5.9 CM2880 B149
• QSB3.9 30 CM550
• QSB5.9 30 CM550
• QSB5.9 44 CM550
• QSB5.9 CM550
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

Grouping of Compatible Engines

• QSB Series Engines

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

• ISB Series Engines

  • ISB CM550
  • ISB/ISD6.7 CM2150 SN
  • ISB5.9 CM2880 B110
  • ISB5.9 CM2880 B140
  • ISB5.9 CM2880 B149

• Other Compatible Engines

  • 4B3.9
  • 6B5.9
  • B4.5

This part is engineered to ensure compatibility across these engines, facilitating a seamless fit and function within the air intake system. It is essential for maintaining the integrity of the air intake process, which directly impacts engine performance and efficiency.

Role of Part 3924990 Air Intake Connection in Engine Systems

The Air Intake Connection, identified by part number 3924990, serves as a vital interface within the engine system, facilitating the seamless flow of air from the intake manifold to the throttle body. This component ensures that the air entering the engine is metered accurately, which is essential for optimal combustion efficiency and engine performance ².

In the context of the engine system, the Air Intake Connection is strategically positioned to connect the air intake system to the engine’s intake manifold. Its primary function is to provide a secure and leak-free passage for air, which is mixed with fuel before entering the combustion chamber. This connection is integral to maintaining the correct air-fuel ratio, which directly influences engine power, fuel efficiency, and emissions.

Furthermore, the Air Intake Connection plays a role in reducing air turbulence as it enters the engine. By smoothing the airflow, it helps in minimizing energy losses and ensuring that the air charge is uniform. This contributes to more consistent engine operation and can enhance the overall responsiveness of the engine under various driving conditions.

Additionally, the connection is designed to withstand the high temperatures and pressures present within the engine compartment. Its robust construction ensures durability and reliability, even under demanding operating conditions. This reliability is paramount in preventing air leaks, which could otherwise lead to decreased engine performance and increased emissions.

Conclusion

In summary, the Air Intake Connection (part 3924990) is a key component in the engine system, responsible for ensuring efficient and reliable air delivery to the engine. Its proper function is essential for maintaining engine performance, fuel efficiency, and emissions control.