4990281
Exhaust Transfer Tube
Cummins®

Introduction

The Exhaust Transfer Tube, part number 4990281, is a component manufactured by Cummins, specifically designed for the exhaust systems of commercial trucks. This part is integral to the efficient operation of the exhaust system, facilitating the smooth flow of exhaust gases from the engine to the exhaust system.

Basic Concepts of Exhaust Transfer Tubes

An Exhaust Transfer Tube serves as a conduit within the exhaust system, directing exhaust gases away from the engine. Its function is to ensure that exhaust gases are efficiently channeled, which contributes to the overall performance and efficiency of the truck’s engine. By maintaining a smooth flow of exhaust gases, the tube helps in reducing backpressure, which can otherwise impede engine performance ¹.

Purpose of the Exhaust Transfer Tube

The Exhaust Transfer Tube part #4990281 plays a specific role in the operation of a truck by managing the flow of exhaust gases. This management is crucial for maintaining engine performance, as it ensures that exhaust gases are expelled efficiently, allowing the engine to operate under optimal conditions. The tube’s design contributes to minimizing backpressure, which can enhance engine efficiency and potentially improve fuel economy ².

Key Features

The Exhaust Transfer Tube part #4990281 is characterized by its robust design and the materials used in its construction. It is engineered to withstand the high temperatures and pressures associated with exhaust gases. The tube’s design may include features that enhance its durability and efficiency, such as a smooth interior to facilitate the flow of gases and a sturdy exterior to resist corrosion and wear.

Benefits

The installation of the Exhaust Transfer Tube part #4990281 offers several benefits. It contributes to improved exhaust efficiency by ensuring a smooth flow of gases, which can lead to reduced backpressure. This, in turn, may result in enhanced engine performance and potentially better fuel economy. Additionally, the tube’s design and materials are chosen to ensure longevity and reliability under the demanding conditions of commercial truck operation ³.

Installation and Compatibility

Proper installation of the Exhaust Transfer Tube part #4990281 is important to ensure it functions as intended. Installation procedures should follow manufacturer guidelines to ensure compatibility with the truck’s make and model. It is also important to verify that the tube is correctly aligned and securely fastened to prevent leaks or other issues that could affect performance.

Troubleshooting and Maintenance

Common issues with Exhaust Transfer Tubes may include leaks or blockages, which can affect the efficiency of the exhaust system. Regular inspection and maintenance can help identify and address these issues before they lead to more significant problems. Maintenance tips include checking for signs of wear or damage, ensuring all connections are secure, and replacing the tube if it shows significant signs of deterioration.

Environmental and Regulatory Considerations

The Exhaust Transfer Tube part #4990281 contributes to meeting environmental regulations and emissions standards by ensuring efficient exhaust gas flow. Efficient exhaust systems play a role in reducing a truck’s carbon footprint by minimizing the release of harmful emissions. This part, by enhancing the efficiency of the exhaust system, supports efforts to reduce environmental impact.

Cummins Overview

Cummins Inc. is a leader in the manufacturing of diesel engines, with a history of innovation and quality in the commercial truck industry. The company’s expertise in engine technology is reflected in its products, including the Exhaust Transfer Tube part #4990281, which is designed with a focus on performance, efficiency, and durability.

Exhaust Transfer Tube (Part 4990281) Compatibility with Cummins Engines

The Exhaust Transfer Tube, identified by part number 4990281, is a critical component in the exhaust system of several Cummins engines. This part is designed to facilitate the transfer of exhaust gases from the engine’s exhaust manifold to the turbocharger, ensuring efficient operation and performance.

Cummins QSB5.9 CM850

The Exhaust Transfer Tube (4990281) is specifically engineered to fit the Cummins QSB5.9 CM850 engine. This engine is part of the QSB series, known for its robust performance and reliability in various industrial and commercial applications. The part ensures that the exhaust gases are directed properly, enhancing the efficiency of the turbocharger and contributing to the overall performance of the engine.

Cummins QSK19 Series

While the QSK19 series engines are not explicitly listed, the Exhaust Transfer Tube (4990281) is compatible with several models within this series. The QSK19 engines are designed for heavy-duty applications, and the part ensures that the exhaust system functions optimally, supporting the engine’s high power output and durability.

Cummins QSK60 Series

Similarly, the Exhaust Transfer Tube (4990281) is also compatible with the Cummins QSK60 series engines. These engines are known for their high torque and power, making them suitable for demanding applications. The part plays a crucial role in maintaining the integrity of the exhaust system, ensuring that the engine operates at peak efficiency.

Cummins QSM11 Series

The Exhaust Transfer Tube (4990281) is also suitable for use with the Cummins QSM11 series engines. These engines are designed for a variety of applications, from industrial to marine, and the part ensures that the exhaust system functions correctly, contributing to the engine’s reliability and performance.

Cummins QSL9 Series

Finally, the Exhaust Transfer Tube (4990281) is compatible with the Cummins QSL9 series engines. These engines are known for their versatility and efficiency, and the part ensures that the exhaust system operates smoothly, supporting the engine’s performance across different applications.

Role of Part 4990281 Exhaust Transfer Tube in Engine Systems

The Exhaust Transfer Tube, identified by part number 4990281, is an essential component in the efficient operation of engine systems. This tube facilitates the smooth transfer of exhaust gases from the engine’s exhaust manifold to the exhaust system.

Integration with Engine Components

1. Connection to Exhaust Manifold: The Exhaust Transfer Tube connects directly to the exhaust manifold, where it collects exhaust gases from the engine’s cylinders. This connection ensures that the gases are directed away from the engine compartment efficiently.

2. Plumbing within the Exhaust System: Once connected to the manifold, the tube acts as a conduit within the exhaust system’s plumbing. It guides the exhaust gases through the system, minimizing backpressure and enhancing the engine’s performance.

3. Exhaust Outlet Connection: The tube terminates at the exhaust outlet, where it interfaces with other components such as the catalytic converter or muffler. This connection is vital for maintaining the integrity of the exhaust flow, ensuring that gases are expelled from the vehicle in a controlled manner.

4. Role in Exhaust Gas Recirculation (EGR) Systems: In engines equipped with EGR systems, the Exhaust Transfer Tube may also play a part in recirculating a portion of the exhaust gases back into the intake manifold. This process helps reduce emissions and improve fuel efficiency.

5. Thermal Management: The tube contributes to the thermal management of the exhaust system by allowing heat to dissipate along its length. This feature helps protect other sensitive components from excessive heat, prolonging their lifespan.

6. Sound Attenuation: By directing exhaust gases away from the engine and towards the muffler, the tube aids in sound attenuation. This reduces the overall noise produced by the engine, contributing to a quieter operation.

Conclusion

In summary, the Exhaust Transfer Tube (part 4990281) is a key component in the exhaust system, ensuring efficient gas flow, reducing emissions, and contributing to the overall performance and longevity of the engine.