4981338
Air Intake Manifold
Cummins®

Introduction

The Cummins 4981338 Air Intake Manifold is a component designed for use in commercial trucks. It plays a role in the engine’s air intake system by ensuring that the engine cylinders receive a consistent and adequate supply of air. This part is significant for maintaining the engine’s performance and efficiency in demanding commercial applications.

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 ensure that each cylinder receives an equal amount of the mixture, which is important for the engine’s combustion process. The manifold contributes to the overall performance of a truck by influencing the engine’s power output, fuel efficiency, and emissions ¹.

Purpose of the Cummins 4981338 Air Intake Manifold

The Cummins 4981338 Air Intake Manifold is designed to facilitate the distribution of air to the engine cylinders. It plays a role in the engine’s operation by ensuring that air is evenly distributed, which is important for consistent combustion and engine performance. This part is integral to the engine’s ability to operate efficiently under various conditions.

Key Features

The Cummins 4981338 Air Intake Manifold is characterized by its specific design and construction features. These include a durable material composition that resists wear and corrosion, precise engineering for optimal airflow, and a design that integrates seamlessly with the engine’s components. These features contribute to the manifold’s performance and longevity.

Benefits

The Cummins 4981338 Air Intake Manifold offers several advantages. It contributes to improved engine efficiency by ensuring a consistent air supply to the cylinders. This can lead to enhanced power output and better fuel economy. Additionally, the manifold’s robust construction supports its reliability in commercial truck applications.

Installation Process

Installing the Cummins 4981338 Air Intake Manifold requires following a series of steps to ensure proper fitment and function. The process involves preparing the engine compartment, aligning the manifold with the engine’s intake ports, securing it in place with the appropriate fasteners, and verifying that all connections are secure and leak-free. Tools such as wrenches and torque wrenches may be necessary, and precautions should be taken to avoid damaging the manifold or other engine components.

Troubleshooting Common Issues

Common problems with air intake manifolds can include leaks, cracks, or blockages that affect engine performance. Troubleshooting these issues may involve inspecting the manifold for visible damage, checking for proper sealing at all connections, and ensuring that the airflow paths are unobstructed. Addressing these problems promptly can help maintain the engine’s efficiency and reliability.

Maintenance Tips

Regular maintenance of the Cummins 4981338 Air Intake Manifold is important for its longevity and performance. This includes periodic inspections for signs of wear or damage, cleaning the manifold to remove any debris that could obstruct airflow, and ensuring that all connections remain tight. Following the manufacturer’s maintenance schedule can help prevent issues and extend the service life of the manifold.

Compatibility and Applications

The Cummins 4981338 Air Intake Manifold is designed for specific engine types and truck models. It is important to verify compatibility to ensure optimal performance and fitment. The manifold is intended for use in applications where durability and efficiency are paramount, such as in heavy-duty commercial trucks.

Cummins Overview

Cummins Inc. is a well-established company in the commercial truck industry, known for its commitment to quality and innovation. With a history of developing reliable and high-performance engine components, Cummins has built a reputation for excellence. The company’s products, including the 4981338 Air Intake Manifold, reflect its dedication to advancing technology and meeting the needs of its customers in the commercial trucking sector ².

Cummins Air Intake Manifold 4981338 Compatibility

The Cummins Air Intake Manifold part number 4981338 is designed to fit seamlessly with several of Cummins’ engine models. This part is integral to the engine’s air intake system, ensuring efficient air flow and optimal engine performance.

ISB/ISD4.5 CM2150 B119

The ISB/ISD4.5 CM2150 B119 engine benefits from the 4981338 air intake manifold. This engine is known for its robust performance and reliability, making it a popular choice in various applications. The manifold’s design ensures that it integrates smoothly with the engine’s architecture, providing a perfect fit and enhancing the engine’s overall efficiency.

QSB4.5 CM850 (CM2850)

The QSB4.5 CM850 (CM2850) engine also utilizes the 4981338 air intake manifold. This engine is recognized for its versatility and power, making it suitable for a wide range of applications. The manifold’s compatibility with this engine model ensures that it meets the specific requirements of the QSB4.5 CM850 (CM2850), contributing to its performance and longevity.

By ensuring a precise fit and optimal performance, the Cummins Air Intake Manifold part number 4981338 is a critical component for both the ISB/ISD4.5 CM2150 B119 and QSB4.5 CM850 (CM2850) engines. Its design and engineering reflect Cummins’ commitment to quality and reliability, making it an essential part for maintaining the engine’s efficiency and effectiveness.

Integration with Engine Components

The Cummins 4981338 Air Intake Manifold is an essential component in the engine system, facilitating the efficient distribution of air into the engine’s cylinders. This manifold is designed to work in conjunction with several other components to ensure optimal engine performance.

Firstly, the Air Intake Manifold connects to the throttle body, which regulates the amount of air entering the system based on the driver’s input. The manifold then distributes this air evenly across the engine’s cylinders, ensuring a consistent air-fuel mixture for combustion.

Additionally, the manifold interfaces with the fuel injectors, which spray fuel into the incoming air stream. This integration allows for precise control over the air-fuel ratio, enhancing engine efficiency and power output.

The Air Intake Manifold also plays a role in the engine’s emissions control system. It is often equipped with ports for the Engine Control Unit (ECU) to monitor air flow and adjust fuel delivery accordingly. This ensures that the engine operates within emissions standards.

Furthermore, the manifold is connected to the exhaust system via the cylinder head. This connection allows for the efficient removal of combustion byproducts, maintaining engine health and performance.

Conclusion

In summary, the Cummins 4981338 Air Intake Manifold is a key component that works seamlessly with the throttle body, fuel injectors, ECU, and exhaust system to ensure the engine operates efficiently and effectively. Its design and compatibility with specific engine models make it a critical part for maintaining the performance and reliability of commercial trucks.