3938668
Exhaust Outlet Connection
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$859.95 $1,023.34

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

Introduction

The Exhaust Outlet Connection 3938668 is a component designed by Cummins for use in heavy-duty truck engines. This part is integral to the exhaust system, facilitating the efficient removal of exhaust gases from the engine. Its role is significant in maintaining the performance and efficiency of the engine, as well as ensuring compliance with emissions standards 1.

Basic Concepts of Exhaust Outlet Connections

An Exhaust Outlet Connection serves as a conduit for directing exhaust gases from the engine to the exhaust system. Its function is vital for the overall performance and efficiency of a truck engine. By providing a secure and efficient pathway for exhaust gases, it helps in reducing backpressure, which can otherwise impede engine performance 2. Additionally, it plays a part in the exhaust system’s ability to manage noise and emissions, contributing to a cleaner and quieter operation.

Purpose of the 3938668 Exhaust Outlet Connection

The 3938668 Exhaust Outlet Connection is designed to direct exhaust gases away from the engine efficiently. This part ensures that exhaust gases are expelled smoothly, which helps in maintaining engine performance and reducing emissions. By optimizing the flow of exhaust gases, it contributes to lower backpressure, which in turn can enhance engine efficiency and power output 3.

Key Features

The 3938668 Exhaust Outlet Connection is characterized by its robust design and the use of high-quality materials. These features enhance its performance and durability. The connection is engineered to withstand the high temperatures and pressures associated with exhaust systems, ensuring reliable operation over time. Its design also includes features that facilitate easy installation and maintenance, contributing to its overall effectiveness.

Benefits of Using the 3938668 Exhaust Outlet Connection

Utilizing the 3938668 Exhaust Outlet Connection offers several advantages. It improves exhaust flow, which can lead to reduced backpressure and enhanced engine efficiency. Additionally, by ensuring efficient exhaust gas removal, it may contribute to lower emissions. The design and materials used in this connection also support its durability and reliability, making it a valuable component for heavy-duty truck engines.

Installation Considerations

Proper installation of the 3938668 Exhaust Outlet Connection is important for ensuring optimal performance and longevity. It is recommended to follow the manufacturer’s guidelines for installation, which may include specific torque settings and alignment procedures. Ensuring a secure and proper fit will help in achieving the desired performance benefits and prevent potential issues such as leaks or reduced efficiency.

Common Issues and Troubleshooting

Typical problems that may arise with the 3938668 Exhaust Outlet Connection include leaks, corrosion, or blockages. Regular inspection and maintenance can help in identifying and addressing these issues promptly. Troubleshooting steps may involve checking for proper installation, inspecting for signs of wear or damage, and ensuring that all connections are secure. Addressing these issues early can help in maintaining the efficiency and reliability of the exhaust system.

Maintenance Tips

To keep the 3938668 Exhaust Outlet Connection in optimal condition, routine maintenance practices are recommended. This includes regular inspections for signs of wear, corrosion, or damage. Cleaning the connection and ensuring that all seals and gaskets are in good condition can also contribute to its longevity. Following the manufacturer’s guidelines for maintenance intervals and procedures will help in ensuring the continued efficient operation of the exhaust system.

Cummins: A Brief Overview

Cummins Inc. is a leader in the manufacturing of diesel engines, known for its commitment to innovation and quality. With a rich history in the automotive industry, Cummins has established itself as a trusted provider of engine solutions. The company’s expertise in engine technology and its dedication to meeting the needs of its customers have made it a prominent name in the field of heavy-duty truck engines.

Exhaust Outlet Connection Part 3938668 in Cummins Engines

The Exhaust Outlet Connection part 3938668, manufactured by Cummins, is a critical component in several of their engine models. This part is designed to facilitate the connection between the exhaust manifold and the exhaust pipe, ensuring a secure and efficient transfer of exhaust gases from the engine to the exhaust system.

C GAS PLUS CM556 Engines

In the C GAS PLUS CM556 engines, the Exhaust Outlet Connection part 3938668 plays a vital role in maintaining the integrity of the exhaust system. This part is engineered to withstand the high temperatures and pressures associated with exhaust gases, ensuring durability and reliability over the engine’s operational life. The connection must be precise to prevent leaks, which could lead to reduced engine efficiency and increased emissions.

Grouping of Engines

The Exhaust Outlet Connection part 3938668 is compatible with a range of Cummins engines, including but not limited to, the C GAS PLUS CM556 series. This part is designed to fit seamlessly into the exhaust systems of these engines, providing a standardized solution for exhaust management across different engine models. The compatibility ensures that technicians and mechanics can easily replace or service this component without needing specific parts for each engine variant.

Role of Exhaust Outlet Connection in Engine Systems

The Exhaust Outlet Connection, specifically part 3938668, is integral to the efficient operation of various engine systems. This component facilitates the secure attachment of the exhaust system to the engine, ensuring a seamless flow of exhaust gases from the engine’s cylinders to the exhaust manifold and subsequently to the exhaust pipe.

In the context of the engine’s exhaust system, the Exhaust Outlet Connection acts as a vital interface. It connects the exhaust manifold, which collects exhaust gases from the engine’s cylinders, to the exhaust pipe. This connection is essential for maintaining the integrity of the exhaust flow, preventing leaks that could lead to decreased engine performance and increased emissions.

Furthermore, the Exhaust Outlet Connection plays a significant role in the overall efficiency of the engine. By ensuring a tight seal between the exhaust manifold and the exhaust pipe, it helps in maintaining the backpressure within the exhaust system. This backpressure is necessary for the proper functioning of the turbocharger (if present) and the catalytic converter, both of which are designed to operate under specific pressure conditions.

Additionally, the Exhaust Outlet Connection contributes to the reduction of noise and vibration within the engine compartment. A well-sealed connection minimizes the escape of exhaust gases, which can cause unwanted noise and vibrations that affect both the engine’s performance and the comfort of the vehicle’s occupants.

Conclusion

In summary, the Exhaust Outlet Connection, part 3938668, is a fundamental component in the engine’s exhaust system. It ensures the efficient transfer of exhaust gases, maintains system pressure, and contributes to the overall reduction of noise and vibration, thereby enhancing the engine’s performance and the vehicle’s drivability.


  1. Andrew Brown Jr, Technologies and Approaches to Reducing the Fuel Consumption of Medium and Heavy-Duty Vehicles, National Academy of Sciences, 2010.

  2. Paul Richards and Jim Barker, Automotive Fuels Reference Book, SAE International, 2023.

  3. Tim Giles, Automotive Engines Diagnosis Repair and Rebuilding, Cengage Learning, 2019.

SPECIFICATIONS

Service Part Topic
01T0-12
Package Dimensions
4.9 x 4.5 x 4.5 in
Weight
2.74 lb
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.