4974398
Air Intake Manifold
Cummins®

The Cummins 4974398 Air Intake Manifold is a component designed for use in commercial trucks. It plays a role in the engine system by facilitating the intake of air, which is necessary for combustion. This part is integral to the efficient operation of the engine, ensuring that the air-fuel mixture is optimized for performance and efficiency.

Basic Concepts of Air Intake Manifolds

An air intake manifold is a part of the engine that distributes the air-fuel mixture to the cylinders. Its function is to evenly distribute the mixture to each cylinder, which is important for consistent engine performance. The manifold operates by receiving pressurized air from the turbocharger or supercharger and channeling it into the engine’s cylinders. The importance of air intake systems in internal combustion engines cannot be overstated, as they directly influence the engine’s power output and efficiency ¹.

Purpose of the 4974398 Air Intake Manifold

This Cummins part ensures that the engine receives a consistent and adequate supply of air. This is vital for maintaining optimal combustion, which in turn contributes to engine performance and efficiency. By providing a uniform distribution of air to the engine’s cylinders, this manifold helps to maximize the engine’s power output while also enhancing fuel efficiency.

Key Features

The 4974398 is characterized by several key features that enhance its performance. Its design incorporates elements that promote efficient airflow, reducing turbulence and ensuring a smooth delivery of the air-fuel mixture. The materials used in its construction are chosen for their durability and resistance to the high temperatures and pressures within the engine compartment. Additionally, the manifold may include unique characteristics such as integrated sensors or specific mounting points that facilitate easier installation and maintenance.

Benefits

Using this part offers several benefits. It contributes to improved engine efficiency by ensuring a consistent air supply, which is important for optimal combustion. Enhanced performance is another advantage, as the manifold’s design helps to maximize the engine’s power output. Reliability is also a key benefit, as the manifold is built to withstand the demanding conditions of commercial truck operation, ensuring long-term durability and consistent performance.

Installation Process

Installing the 4974398 involves several steps to ensure proper fitment and function. The process begins with the removal of the old manifold, if present, followed by the preparation of the engine bay for the new component. Specific tools may be required to secure the manifold in place and to connect it to the engine’s air supply and cylinder ports. Careful attention to the manufacturer’s instructions is important to ensure a correct and secure installation.

Common Issues and Troubleshooting

Common issues with this part may include leaks in the air supply lines, damage to the manifold itself, or problems with the sensors integrated into the design. Troubleshooting these issues involves inspecting the manifold and its connections for signs of wear or damage, checking for proper sealing, and ensuring that all sensors are functioning correctly. Solutions may range from simple repairs, such as tightening connections, to more complex tasks like replacing damaged components.

Maintenance Tips

Regular maintenance of the 4974398 is important for ensuring its longevity and optimal performance. This includes periodic inspections for signs of wear or damage, cleaning the manifold to remove any buildup that could impede airflow, and checking the integrity of all connections and sensors. Following a maintenance schedule that aligns with the manufacturer’s recommendations can help prevent issues and ensure the manifold continues to operate efficiently.

Cummins Overview

Cummins Inc. is a well-established manufacturer in the commercial truck industry, known for its commitment to innovation and quality in engine component manufacturing. With a history of developing reliable and high-performance engine parts, Cummins has built a reputation for excellence. The company’s dedication to advancing technology and improving engine efficiency is evident in its product line, including the 4974398.

Cummins Air Intake Manifold 4974398 Compatibility

The Cummins Air Intake Manifold part number 4974398 is designed to fit seamlessly with several engine models, ensuring optimal performance and efficiency. Here is a detailed look at the compatibility of this part with various Cummins engines:

ISM11 Series

The ISM11 series engines benefit significantly from the 4974398. This part is engineered to enhance the air flow and combustion efficiency of the ISM11 engines, making it an ideal fit for applications requiring robust and reliable performance.

CM876 Series

For the CM876 series, the 4974398 provides a perfect match. This part is tailored to integrate smoothly with the CM876 engines, ensuring that the air intake system operates at peak efficiency. The design of this manifold supports the specific needs of the CM876 engines, contributing to better overall performance.

SN Series

The SN series engines also see significant improvements with the installation of the 4974398. This part is crafted to align with the SN engines, enhancing their air intake capabilities and ensuring that the engines run smoothly and efficiently. The compatibility of this manifold with the SN series makes it a valuable component for maintaining engine performance.

Grouped Compatibility

In addition to individual series, the 4974398 is compatible with a range of Cummins engines that share similar design and operational characteristics. This broad compatibility ensures that the manifold can be used across multiple engine types, providing a versatile solution for various applications.

By ensuring a precise fit and optimal performance, the 4974398 from Cummins is a reliable choice for maintaining and enhancing the efficiency of the specified engine models.

Conclusion

The 4974398 Air Intake Manifold is a key component in the efficient operation of engine systems, particularly when integrated with specific arrangements and turbochargers. In an engine arrangement, the Air Intake Manifold serves as a conduit that evenly distributes the air-fuel mixture to the cylinders. This ensures that each cylinder receives a consistent amount of the mixture, which is essential for balanced combustion and optimal engine performance. The manifold’s design allows for precise air distribution, which is particularly important in high-performance engines where even minor discrepancies can lead to significant changes in power output and efficiency.

When paired with a turbocharger, the Air Intake Manifold plays an even more significant role. Turbochargers compress the incoming air, increasing its density and allowing more air to enter the engine. The manifold must be designed to handle this increased air pressure and flow rate. It ensures that the pressurized air is evenly distributed to all cylinders, maximizing the benefits of the turbocharger. This integration is vital for engines that require high power outputs, as it directly influences the engine’s ability to perform under various conditions.

In summary, the 4974398 is integral to the engine’s air management system. Its proper function and integration with other components like the turbocharger and engine arrangement are essential for achieving the desired performance and efficiency in modern engine systems.