4981340
Air Intake Manifold
Cummins®

Introduction

The Cummins 4981340 Air Intake Manifold is a component designed for use in commercial trucks. It plays a role in the engine system by facilitating the distribution of air to the engine cylinders. This part is integral to the efficient operation of the truck, contributing to both performance and fuel economy.

Basic Concepts of Air Intake Manifolds

An air intake manifold is a system that distributes air into the cylinders of an engine. Its function is to ensure that each cylinder receives a consistent amount of air, which is necessary for the combustion process. The manifold contributes to the overall performance of a truck by optimizing the air-fuel mixture, which can enhance engine power and efficiency ¹.

Purpose of the Cummins 4981340 Air Intake Manifold

The Cummins 4981340 is designed to play a role in the engine system by evenly distributing air to the engine’s cylinders. This even distribution is vital for maintaining engine efficiency and ensuring that the combustion process occurs smoothly. The manifold also helps in reducing the temperature of the incoming air, which can lead to more efficient combustion and potentially lower emissions ².

Key Features

The Cummins 4981340 is constructed from durable materials that are resistant to the high temperatures and pressures found within an engine environment. Its design includes features that enhance airflow and reduce turbulence, which can improve engine performance. Additionally, the manifold may incorporate elements that facilitate easier installation and maintenance ³.

Benefits

The Cummins 4981340 offers several benefits. It contributes to improved engine performance by ensuring a consistent air supply to the cylinders. This can lead to better fuel efficiency as the engine operates more smoothly. The durable construction of the manifold also adds to its longevity, providing reliable service over the lifespan of the truck ⁴.

Installation Process

Installing the Cummins 4981340 involves several steps. Preparation includes ensuring that the engine bay is clean and that all necessary tools are on hand. The manifold should be aligned with the engine’s intake ports and secured in place according to the manufacturer’s instructions. It is important to follow the sequence of operations to ensure a proper fit and seal.

Common Issues and Troubleshooting

Users may encounter issues with the Cummins 4981340, such as leaks or reduced engine performance. Troubleshooting these issues often involves inspecting the manifold for cracks or loose connections. Solutions may include tightening connections or replacing damaged components to restore proper function.

Maintenance Tips

To maintain the Cummins 4981340, regular inspection for signs of wear or damage is recommended. Cleaning the manifold to remove any buildup that could obstruct airflow is also important. Following the manufacturer’s guidelines for maintenance can help ensure the longevity and optimal performance of the component.

Compatibility and Applications

The Cummins 4981340 is designed for specific engine types and truck models. It is important to verify compatibility to ensure proper function and integration within the engine system. Application notes provided by the manufacturer can offer guidance on the correct use of this component.

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 in the field of diesel engine technology.

Role of Part 4981340 Air Intake Manifold in Engine Systems

The Air Intake Manifold, specifically part 4981340, is integral to the efficient operation of engine systems. It serves as a conduit that evenly distributes the air-fuel mixture to each cylinder of the engine. This ensures optimal combustion and performance.

Integration with Engine Components

• Throttle Body: The Air Intake Manifold connects directly to the throttle body, which regulates the amount of air entering the engine. This connection is vital for maintaining the correct air-fuel ratio.
• Fuel Injectors: Positioned within or near the manifold, fuel injectors spray fuel into the incoming air stream. The manifold ensures that this mixture is evenly distributed to all cylinders.
• Intake Valves: The manifold channels the air-fuel mixture into the intake valves, which then deliver it into the combustion chambers. Proper manifold design enhances engine efficiency and power output.
• Engine Control Unit (ECU): Sensors within the manifold provide feedback to the ECU regarding air flow and temperature. This data allows the ECU to make real-time adjustments to fuel delivery and ignition timing.
• Exhaust Manifold: Although not directly connected, the Air Intake Manifold works in tandem with the exhaust manifold to ensure balanced engine operation. Efficient air intake leads to more complete combustion, which in turn produces less harmful emissions.
• Intercooler (for Turbocharged Engines): In turbocharged systems, the manifold may be connected to an intercooler. This setup cools the compressed air before it enters the engine, improving efficiency and power.
• Air Filters: The manifold is typically preceded by an air filter, which cleans the incoming air. This ensures that only clean air enters the engine, protecting internal components from wear and damage.

By facilitating the smooth and even distribution of the air-fuel mixture, part 4981340 plays a significant role in enhancing engine performance, fuel efficiency, and overall reliability.

Conclusion

The Cummins 4981340 Air Intake Manifold is a critical component in the engine system of commercial trucks. Its role in evenly distributing air to the engine cylinders contributes to improved performance, fuel efficiency, and reliability. Proper installation, maintenance, and understanding of its integration with other engine components are essential for optimal operation.